Customizing Error Messages

Introduction

Error messages are your direct communication with users when something goes wrong during registration. Well-crafted error messages help users understand what happened and what to do next, turning frustration into clarity.

Secure User Registration by PureDevs allows you to customize all error messages to match your site’s tone, language, and branding.

Available Error Messages

The plugin provides three customizable error messages:

1. Invalid Nonce Error Message

• Triggered when: CSRF token validation fails or expires
• Default message: “Invalid nonce error.”
• Common causes:
  • Form left open too long (nonce expired)
  • Page cached with old nonce
  • Browser back button used
  • Session expired

2. Email/Domain Blocklist Error Message

• Triggered when: User attempts to register with blocked email or domain
• Default message: “Your email not allowed from registration! Try using another email address.”
• Common causes:
  • Email address is in blocklist
  • Email domain is blocked
  • Disposable email service used

3. Captcha Error Message

• Triggered when: Google reCAPTCHA validation fails
• Default message: “Google captcha error! Please try again.”
• Common causes:
  • User didn’t check “I’m not a robot” box
  • reCAPTCHA challenge failed
  • Network connectivity issue
  • Invalid reCAPTCHA response

How to Customize Error Messages

Step-by-Step Guide

1. Log in to your WordPress admin dashboard
2. Navigate to Settings → Safe Registration
3. Scroll down to the Error Messages section
4. You’ll see three text fields for each error type
5. Click in the field you want to customize
6. Delete the default text and type your custom message
7. Repeat for any other messages you want to customize
8. Scroll to the bottom and click Save Changes

Writing Effective Error Messages

Best Practices

Be Clear and Specific

• Explain what went wrong in simple terms
• Avoid technical jargon (nonce, CSRF, validation, etc.)
• Use language your users understand

Provide Actionable Guidance

• Tell users what to do next
• Suggest specific actions (refresh, use different email, etc.)
• Make the solution obvious

Be Polite and Helpful

• Don’t blame the user
• Use friendly, professional tone
• Stay positive and solution-focused

Keep It Concise

• One to two sentences maximum
• Get to the point quickly
• Remove unnecessary words

Match Your Brand Voice

• Professional sites: Formal, clear language
• Casual sites: Friendly, conversational tone
• International sites: Simple, translatable English

Example Custom Messages

Invalid Nonce Error Messages

Professional Tone

• “Your session has expired. Please refresh the page and try again.”
• “Security validation failed. Please reload the page and resubmit the form.”
• “This registration form has expired. Refresh your browser and try again.”

Casual Tone

• “Oops! This form is a bit old. Give the page a refresh and try again.”
• “This registration link has expired. Hit refresh and we’ll get you a fresh one!”
• “Looks like your session timed out. Just refresh and you’re good to go.”

Simple/International

• “Please refresh the page and try again.”
• “Session expired. Refresh your browser.”
• “Reload the page and submit again.”

Email/Domain Blocklist Error Messages

Professional Tone

• “This email address is not permitted for registration. Please use an alternative email.”
• “Registrations from this email domain are not allowed. Please use your personal or work email.”
• “We don’t accept temporary email addresses. Please use a permanent email account.”

Casual Tone

• “Sorry, we can’t accept that email. Try a different one!”
• “This email isn’t on our approved list. Got another one you can use?”
• “Temporary emails won’t work here. Use your regular email instead!”

Simple/International

• “This email is not allowed. Use a different email.”
• “Email not permitted. Try another email address.”
• “Cannot register with this email. Use different email.”

Captcha Error Messages

Professional Tone

• “Please verify you’re not a robot by completing the reCAPTCHA challenge.”
• “reCAPTCHA verification required. Check the ‘I’m not a robot’ box to continue.”
• “Security verification failed. Please complete the reCAPTCHA and try again.”

Casual Tone

• “Don’t forget to check the ‘I’m not a robot’ box!”
• “Oops! We need you to prove you’re human. Click that checkbox!”
• “Hey there, human! Complete the reCAPTCHA before submitting.”

Simple/International

• “Check the ‘I’m not a robot’ box.”
• Complete reCAPTCHA verification.
• “Please verify you are human.”

Multilingual Considerations

If your site serves users who speak different languages:

Options for Multilingual Error Messages

1. Use Translation Plugins

• Install a multilingual plugin like WPML, Polylang, or TranslatePress
• Translate error messages using the plugin’s interface
• Messages will display in the user’s selected language

2. Use Simple English

• Write messages in basic English that’s easy to translate
• Avoid idioms, slang, and complex phrases
• Keep sentences short and direct

3. Use Icons or Symbols

• Supplement text with visual indicators
• Use universal symbols when possible
• Note: This requires theme customization

Testing Your Custom Messages

After customizing error messages, test them to ensure they display correctly:

Testing Invalid Nonce Message

1. Open your registration page
2. Leave the page open for several hours (wait for nonce to expire)
3. Submit the registration form
4. Verify your custom nonce error message appears

Testing Email Blocklist Message

1. Add a test email to your blocklist (e.g., test@example.com)
2. Save settings
3. Go to registration page
4. Try registering with test@example.com
5. Verify your custom blocklist error message appears
6. Remove test email from blocklist

Testing Captcha Message

1. Ensure reCAPTCHA is enabled in settings
2. Go to registration page
3. Fill out registration form
4. Submit WITHOUT checking “I’m not a robot”
5. Verify your custom captcha error message appears

Common Mistakes to Avoid

Messages That Are Too Technical

• Bad: “Nonce validation failed. Token expired or invalid.”
• Good: “Please refresh the page and try again.”

Messages That Don’t Explain What to Do

• Bad: “Error occurred during registration.”
• Good: “Your session expired. Refresh the page and try again.”

Messages That Are Unfriendly

• Bad: “You entered a forbidden email address.”
• Good: “This email isn’t accepted. Please use a different email.”

Messages That Are Too Long

• Bad: “We’re sorry, but the email address you provided appears to be from a temporary or disposable email service provider, which we unfortunately cannot accept for registration purposes at this time.”
• Good: “Temporary emails aren’t accepted. Please use a permanent email address.”

Messages With Spelling/Grammar Errors

• Always proofread your custom messages
• Check spelling and grammar carefully
• Have someone else review if possible

Resetting to Default Messages

If you want to revert to the default error messages:

1. Go to Settings → Safe Registration
2. Scroll to the Error Messages section
3. Replace your custom messages with these defaults:
   • Invalid nonce: “Invalid nonce error.”
   • Email blocklist: “Your email not allowed from registration! Try using another email address.”
   • Captcha: “Google captcha error! Please try again.”
4. Click Save Changes

Accessibility Considerations

When writing error messages, consider users with accessibility needs:

• Use clear language – Screen readers read messages aloud
• Be specific – Help users understand exactly what went wrong
• Provide clear instructions – Tell users precisely what action to take
• Avoid color-only indicators – Text should be understandable without color