Alright I solved the issue and here’s what I did. Hope it helps someone else.
I disabled the .htaccess file and replaced it with the default WordPress one. You can find its code here:
https://developer.www.ads-software.com/advanced-administration/server/web-server/httpd/#basic-wp
After that, I updated the permalinks to connect the new .htaccess file with the website:
WordPress Admin Dashboard >> Settings >> Permalinks >> Save Changes
Last thing I did was rename the old .htaccess file to .htaccesss.
Everything should work ??