this is like WP issue , not Cyberpanel or OLS
have you tried this ?
the second page , suggested to add add_filter( 'big_image_size_threshold', '__return_false' );
please give it a try and see how it goes
May I know what is your OLS version ?
should tell you the version.
I just tested with OLS + PHP 73 on Wordpress and uploaded a plugin zip without problem , over HTTPS.
try max conn set to a lower number , like 10 or 20
set PHP_LSAPI_CHILDREN=120 to same number as max conn
set instance to 1
you are allowing over 120 PHP processes at same time , that could overload the server when that many PHP running.
You need to check the log for 503
yes, when cache...
if you are using rule like this
RewriteRule ^test/.*$ - [H=application/x-httpd-lsphp70]
it will match all the request to run as lsphp , even its png , jpg , or css , js ...etc , that .* matches everything.
you will need a rewrite cond to check if it's PHP before redirect, or set...
by that means anything you did to .htaccess, will requires OLS restart to take effect.
restarting it is simple as
systemctl restart lsws
service lsws restart
auto-load is something different , in older OLS , you will need to set in OLS to tell it to read htaccess file , with...