StarPets Apple Pay Payment Failing Repeatedly On iPad

I am a new user of StarPets and I am having a persistent problem using Apple Pay on my iPad. Every time I try to make a purchase in the game, the payment fails even though there is enough money available, and this has been happening since May 23. I waited until the next day and tried again several times, but the payment still will not go through. Because I am cautious about security, I do not want to enter my full card number directly, so I am relying on Apple Pay to make purchases safely. At the moment I cannot buy the items I want in the game because Apple Pay keeps failing, and I have not been able to fix this on my own. I kindly request that you check my account and the Apple Pay payment system on my iPad, explain why the payments are failing, and contact me by email to help me resolve this issue so I can make purchases safely.