In-app purchase fails on iPhone

Hello,

I tried to make an in-app purchase in the game "Top Tycoon" on my iPhone 11 Pro, but I received the following error message:

"Your Purchase Could Not Be Completed. For assistance, contact iTunes Support at www.apple.com/support/itunes/ww/."

I’ve checked my payment details and everything seems fine. Could you please help me resolve this issue?

Here are my details:

- Apple ID: f**********@gmail.com  

- Region: [please confirm your Apple ID region United States ]  

- Device: iPhone 11 Pro  

- Game: Top Tycoon

Thank you in advance!

[Edited by Moderator]