To resolve the issue of not being able to reset your Mensa Brain Training password due to the error message, follow these steps:

1. Check Your Internet Connection: Ensure that your device is connected to the internet. Test your connection by opening a different website or app.

2. Try a Different Browser: Sometimes the browser may cause issues. Try resetting your password using a different browser such as Chrome, Firefox, or Safari.

3. Clear Browser Cache and Cookies: Clearing the cache and cookies may resolve temporary issues with the website.
- For Safari, go to the top menu and select Safari > Preferences > Privacy > Manage Website Data. Here you can remove data for specific sites or clear all data.

4. Disable Browser Extensions: Some extensions may interfere with the password reset process. Disable any extensions or try using an incognito or private window.

5. Try the Password Reset Link Again: Go back to the Mensa Brain Training login page and click on the password reset link again. Enter your email address and submit the request.

6. Use a Different Device: If possible, try using a different device to see if the issue persists.

7. Contact Support: If you've tried the above steps and still encounter the error, it's advisable to reach out to Mensa Brain Training support. Provide them with details about the error to get further assistance.

By following these steps, you should be able to either reset your password successfully or get help from customer support.