Installing the WireGuard manually works perfectly.
Setting the configuration manually is more problematic, and the template is not intuitive. Wireguard has two main sections: [Interface] and [Peer]. The fields look mixed, and the descriptions are not intuitive for setting up the WireGuard.
Setting the WG VPN using the config file can be a bit confusing. The file needs the extension “.conf,” and its name is in the “VPN Name” field. Also, I found a bug: in the config file setting, the line "DNS = " is ignored during the import — it has to be set up manually during import.
Ultimately, I can confirm that WireGuard VPN works superbly (if you do not make any mistakes during setup).