YeaMaster slots app not available in my country or region, yet allowed me to spend money and didn't redeem winnings

i downloaded the app called “YeaMaster slots” a while back which now no longer comes up if I search it on the App Store… yet still shows up on my Home Screen and allows me to use it as normal except doesn’t actually allow me to redeem the money I rightfully won. I spent money on this app, and got sweepstake coins which then I used on the casino and afterwards had winnings that exceeded $700, but I only wound up “redeeming” (never received the funds) $700.08. A week or so later I’m left utterly confused, because I still have received any of my winnings, and now the app makers of YeaMaster slots are not answering my emails. When I went to report this app on the App Store, I found out that apparently… the YeaMaster slots app isn’t available in my country or region when i try search for it on the App Store. How is it that ,with it being unavailable in my country or region, it was still available to me to click on it on my home screen since I’ve already download it supposedly before it became “unavailable”, and now left completely scammed out of my money and time after I spent money on this app and can’t even receive my winnings and the app makers ignore my emails when I email them. Why did it except my money when I paid for sweepstake coins when it apparently “isn’t available in my country or region”. And now after I spent my time playing the casino and spent my my money to play, the people who developed and run this app won’t even answer me… after they stole my money and time. And yes I say stole because they are not sending me the money I won with the sweepstake coins I purchased. How is this okay? I am infuriated that I can’t get any answers. And I’m left with none of my winnings and just total confusion. Please tell me why this happened and how I was able to spend my own money on this app for the SC and then when I won money and tried to redeem it I never got it and now they won’t answer and I can’t even find them on the App Store to report a problem because the app doesn’t even come up on the App Store when it’s literally already on my phone and available for me to use and spend money on. I can only find it when I dig deep in my settings under “report a problem” but still can’t report a problem because there isn’t an option for this particular problem I’m facing. To just find out I can’t access it from the App Store cause the app isn’t even available in my country or region after I’ve already spent money and time and won yet can’t receive the money is extremely frustrating and I feel like this is extremely illegal. Is it possible to still get my $700 in winnings and also How do I report this app. It apparently is scamming people in my country/region.

[Re-Titled by Moderator]