plugin wp supercache – New comment not showing up (only for logged out users)

The problem is:

Native wordpress new comment not showing up on any post (only for logged out users).

Discussion settings that are checked (The rest are unchecked):

  • Attempt to notify any blogs linked to from the post
  • Allow link notifications from other blogs (pingbacks and trackbacks) on new posts
  • Allow people to submit comments on new posts
  • Comment author must fill out name and email
  • Show comments cookies opt-in checkbox, allowing comment author cookies to be set
  • Enable threaded (nested) comments (10) levels deep

Website url: https://newswar.info

Environment:

  • WordPress version: 5.7.1
  • PHP version: 7.4.10

What i tried so far without sucess:

  • Disable all plugins
  • Switch to the basic theme Twenty Nineteen

IMPORTANT NOTE:

  • WP Super Cache is installed, i think this might be a related problem but even if i desactivate the plugin…its’ not resolving the problem.

Any help will be much appreciated!

Thank you!