Crash / Conflict with Ultimate Member

did you enable the “Logged-in User” option of WP Fastest Cache?

no I’m not,

can we exclude that plugin? (Ultimate Member) from WP Fastest Cache

you should enable the “Logged-in User” option.

actually, what the meaning of cache logged-in user,

can you explain for us? Thanks

if the option is enabled, the logged-in users see the cached version but in this case, the user appears as logged-out.

what the mean of ‘appears as logged-out’?

The problem you are experiencing will occur.

how to exclude plugin from WP Fastest Cache? Because I also need cache content for logged-in userd

can you try to serve cache via php as below please?

https://www.wpfastestcache.com/tutorial/how-to-serve-cache-only-via-php/

is this not break anything? Sorry

no. it may help.

where i can add that code, sir?