As the issue appears to be related to the plugin’s registration process, I recommend seeking help through that plugin’s dedicated support channel.
]]>We recently found out that the message saying “Please provide a valid activation key” is actually an error. The account is successfully being registered but the error message is still showing up.
I don’t believe any of the plugins are taking over the activation process.
What leads you to believe that?
If anything were to be taking over the activation page it’d be the theme and theme plugin but I’ve contacted their support and they reassured me that the activation process is purely WordPress and the theme just simply stylizes it to match the branding of the site.
Feeling pretty stuck on this one. If I could figure out what plugin it is I could contact support for that plugin but I’m really clueless as to what plugin would be causing it.
]]>Deactivate all plugins and switch to twentytwenty theme so only core WP is in effect. The registration process should work as expected. Following the email link should result in a password input form. Restore your theme, then plugins, one at a time, testing after each activation. When key validation again fails, the last activated module is the cause.
If by chance even core WP fails to validate for you, the most likely cause is your server is doing some sort of unusual redirect where passed URL parameters like the key/nonce are being dropped. In that case you probably need your host to help resolve the problem.
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