NGINX Reverse Proxy configuration arbitrary resets

Two months ago, I installed NGINX as a Reverse Proxy with Caching enabled by following the default installation of cPanel through WHM NGINX Manager. The problem I'm having is that after 4-6 days:

• the configuration file "/etc/nginx/conf.d/users/myuser.conf" of NGINX is reset
• the NGINX cache is cleared; i.e. the files under "/var/cache/ea-nginx/proxy/myuser"

This process does not seem to be triggered by some sort of a scheduled process, as it is not executed after specific time intervals, or at specific time in the day. I have just noticed that it happens after 4-6 days, and the effect is the same as if the command "/scripts/ea-nginx conf --all" were executed.

I have come across to some posts in other forums mentioning the very same problem. This is a serious trouble with the cPanel's NGINX, as it makes totally useless the Caching feature of NGINX. It seems that the Cache is not refreshed in the pattern First-In-First-Out, but after some days it is totally wiped out, and starts filling up from the beginning. This has severe impact on the performance of the website, which is depicted by Google Search Console and other tools you may use to monitor the performance of your website.

I'm seriously thinking of going for Litespeed indeed with getting direct support from Litespeed.