FaceApp Account Shows No Active Subscription on iOS

About a month and a half ago, while using an Android phone, I purchased a paid FaceApp subscription for approximately $31 using my email address i***************@gmail.com. I later switched to an iPhone and signed in with the same email address, but my subscription was not recognized on the new device.

It is unacceptable that simply changing platforms would cause the subscription I paid for—and which was still active—to effectively disappear. Because of this issue, I canceled my membership and requested a refund, but I was told that no refund would be issued under any circumstances.

I am experiencing serious inconvenience because I cannot use the service I paid for and am being denied a refund of the $31 I was charged. I request that my active subscription be restored on my new device for the remaining paid period, or if that is not possible, that the full amount be refunded to me.