Already bought pro

I already bought pro as of 2016 but I switched my email for PayPal and migrated from one email to another and now it isn't registering. I have no idea what to do. I tried to repurchase it and it charged me.

Hi, you bought "in app" and you are likely trying to buy the separate pro license, anyway just email me at [email protected] if you have issues so i can fix it, thanks