Wonderful software, easy payment, great rates, but lack of port forwarding is a major fallback. I understand it was due to a very minor chunk of bad actors, but that minor chunk was hosting CSAM and other horrible internet-accessible things, and no way to track what traffic is where, means they had to remove the feature for the 98% of good faith users.
But I almost refuse to use AirVPN's software. It's so... weird. I'm thankful they support wireguard with zero issues, so I can just use the default network manager and apps for Linux/Android, but that client interface is so backwards compared to Mullvad and iVPN.