Hi @forumlover ,

The error “Sorry, something is wrong with your data.” appears when the WordPress security nonce is invalid, and this almost always happens due to page caching on the forum login page. wpForo generates a new nonce each time, but yourcache plugin or server cache is likely serving an old, expired form, so the login request fails.

Please make sure all wpForo pages are fully excluded from caching, including the main forum page and all subpages. Here is the official guide with exact rules for all cache plugins:
https://wpforo.com/community/faq/wpforo-and-cache-plugins/#post-37150

After excluding them, please clear all caches (plugin, server, CDN) and try logging in again in an incognito window.

Similar topics:

• https://wpforo.com/community/how-to-and-troubleshooting-2/sorry-something-is-wrong-with-your-data/
• https://wpforo.com/community/how-to-and-troubleshooting-2/error-message-sorry-something-wrong-with-your-data/