Updated to v5.12 and openVpn doesn't work well

I updated to v5.12 of CIS firewall and I started having issues. So when OpenVPN is running, I’m unable to browse online (with Chrome and Firefox) and I can’t connect to my remote server either WinCSP or Filezilla.

I followed Chiron’s tutorial for uninstalling CIS firewall. I uninstalled the previous 5.12 build with Revo uninstaller and then used CIS uninstaller tool in safe mode. I reinstalled v5.12 and I still have the same issues.

I previously went into the firewall settings and defined the openvpn exec as trusted application. Still getting the same issues. Everything was working fine with v5.10 with the default settings.

I would appreciate any help given.