HELP – A3! Otome Anime Game Review

I loved this game! I would constantly play it and collect cards. But when I transferred my data to my new phone, my gems/diamonds reset to 0 which really upset me since I was saving and collecting them. I wanna know why that happened or maybe I made a mistake? It won’t show in my gem history since I recently transferred the data.
Review by lee1700 on A3! Otome Anime Game.