Won’t sync my purchase to my ipad – Learn Japanese! - Kanji Review

I have enjoyed using the app and bought extra lessons, which works fine on my iphone yet would not sync to my ipad. On my ipad app, it asks me to make another purchase and pressing “restore purchases” won’t do anything either, would love it and change this review if it is fixed, as everything else works great.
Review by kanjiiii on Learn Japanese! - Kanji.