My indie license

I purchased a perpetual indie license in 2020, barely used it, opened it today, received an update, and noticed that the license was gone. I had a serial key in it before, but I can’t find it. How should I solve it?
Maybe software downgrade automaticlly,
All files in the preset folder do not open. Is there any way?

Hi sorry about this, can you send us an email at support@jangafx.com with the email you used to purchase your key? I’ll be able to track it down from there!