Two weeks before your subscription expires - they auto-renew if you didn't disable that function. I didn't disable the goddamned function and - of course - they auto-renewed me for the Cadillac plan that's $160 a year. My perfectly fine cheapie plan was $60.
I'm in the process of trying to get a refund and I'm not enjoying it.
Mullvad is good but I've been using AirVPN lately since that has port forwarding and lets me use Soulseek. Like Mullvad it's also pay as you go with no auto-renewal