I can't enable it, more details inside

[3rdxw]

Have you checked the admin panel if the plugin is there and enabled? Go to admin/plugins. Have you clicked "Initialize database for this module" (in case it appeared).

I can't enable it!, I enabled it before and I have Initialize the database before

Remove the history plugin, see if it works now.

Removed

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NA for now

Check your server files (the root) for the error_log file. Report the content in your issue.

There's no error_log file at my server

Open Firefox Developer Tools > Network. Check if there is a request sent to the server when you click on the "N" (notification bubble) next to the username.

NA for now

Check your database if there are entries in the table qa_eventlog.

Table exists but empty

Check your database table qa_options if there is "event_logger_to_database" == 1.

event_logger_to_database 0

Check your database table qa_options if you find the options "q2apro_onsitenotifications_enabled", "q2apro_onsitenotifications_nill", "q2apro_onsitenotifications_maxage", "q2apro_onsitenotifications_maxevshow" with values.

There was q2apro_onsitenotifications_enabled but I have removed it, and reinstall doesn't seems to get it back!

Check your HTML source if the two files "script.js" ans "styles.css" are correctly linked (search for qa-plugin/q2apro-on-site-notifications/).

NA for now

Is there the table qa_usermeta in your database?

Yes, I have qa_usermetas, there is a s at the end, but anyways the table is empty

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Question2Answer: 1.8.6
PHP: 7.4.26
MySQL: 5.7.36