Hi. I did that and still the same issue. Funny thing. I’ve uninstalled, deleted and reinstalled the plugin again. Now even the BasePress Settings are not saved. For example if I switch from Modern to Zen theme, after saving, the Modern theme is selected again. Basically, all the setting I did 2 days ago when I installed the plugin for the first time, are somehow hardcoded without the option to change them. I suspect it could be a database issue (MariaDB/INNO) but there is another curious thing. I created a staging version of the entire site and everything works fine. I am able to create new KB’s and add sections and articles, save settings, etc.
Here are a few details about the server, if it helps:
Server info: nginx/1.21.0
PHP version: 7.4.18
PHP post max size: 200 MB
PHP time limit: 3600
PHP max input vars: 10000
cURL version: 7.68.0, OpenSSL/1.1.1f
MySQL version: 5.5.5-10.4.18-MariaDB