Subscription move from android to ios

I am currently trying to set my avg subscription on my iPhone and I still have a running subscription on my old android phone. Tried to follow instructions how to move subscription on iOS but I suppose I bought it on google play. When I sign in on the iOS device, AVG says I do not have a paid subscription. I really don’t want to pay again because my subscription is up until June 26!!! Thanks for helping.
KR,
Micaela