I was billed twice for the same in-app purchase

Hey guys, I had to re-install MG2 as result of the upgrading to iOS 15 , I clicked to re-install purchases , both of which I bought on Feb 2019. The MIDI Output went through without any issue, but the Plugin and Host was billed again this time around. So in essence I am paying twice for the same in-app. Can this be ? Did I do something wrong ? Can this be reverted ? … Thanks