Underrecover

I am using IPAD 7th generation, on iOS 13.3.1. I did try deleting the app+ and installing again two times facing the same issue. Doesn't matter what app I try to install it has the same issue.

I downloaded the app and install it perfectly. I can open it and it works fine with out any issues, but when I try to download any game or app it shows it downloads and when I click install it stays on waiting icon and grays out. I waited for 1 hour roughly, but nothing changes. I know my UDID number is correct as I checked it 5 times before I wrote it down and as for app itself it installed with out any issues. As I paid for this app+ would be nice if someone could help me to find solution for this issue. My internet speed isn’t an issue too as it is 800mbs. I tried reinstall the app+ too but nothing changed as it have the same issue as before. If you need any extra informations about my issue or specific data just let me know I gladly give it. Thank you.