I run a Wordpress-site on on www.xyz.com/ and tried to install Revive at www.xzy.com/openx as proposed by the Softaculous installer. Running Revive 5.02 on Apache 2.4.41 and PHP 7.2.26
I can log into the admin interface and open the dashboard ( www.xyz./openx/www/admin/dashboard.php ) but when I press a "Save" button I'm getting a 404 page (e.g. I can edit the form at www.xyz.com/openx/www/admin/advertiser-edit.php but when I press "save" I'm getting a 404 with the same URL)
Probably not a Revive problem but maybe you can give me hint where to look for a solution.