When I signed up it they offered lifetime free now when I see it lifetime is gone and it is asking me to pay for lifetime again

This app seems to want only 4096 bit keys, wasted so much time trying to get it to work

I downloaded this app two days ago, and purchased the lifetime license for $19.99 and now it doesn’t show that I purchased it and it will not restore purchase. It crashes repeatedly when I try to click on Support in the app. No way to resolve. I need a refund!