They do not currently offer Windscribe lifetime accounts. It looks like they offered this in 2018, and it was quite a great deal as well. In 2018, they offered a Black Friday promotion where you could get a lifetime subscription of Windscribe for $59. That would mean you’d have this VPN forever, for a one-time payment of $59.  Unfortunately, they no longer offer this, so you’ll have to sign up for a month-to-month or yearly plan.