Hi, the Osclass Pay Payment Plugin has always worked well on my website, but I noticed an issue, if I try to click on "search" on the site it doesn't display any ads, but if I disable the plug in, the ads are visible, why this??

Try to deactivate -> activate plugin.
If does not help, enable database debug log.
You will see some errors from database.

I've already tried, if I deactivate the plug in and reactivate it doesn't change

how i enable database debug log?

I enabled it but nothing happens, how can I resolve it? Users cannot pay for ads without the plugin, site search is important

You should see database query logs at bottom

could you be more precise? below where in admin? house? see screen F12

Updated docs with little bit more details:
https://docs.osclasspoint.com/database-debug-mode

i solved, I uninstalled and deleted the plugin and reloaded the latest version

Thanks for feedback