iTunes store is unable to process purchas… – Apple Community

I have the same problem; iPad with iOS 9.3.6, cannot update apps, but can download new apps. When I try to update apps, I get the “The iTunes Store is unable to process purchase at this time…” error. Have been getting this error for a few days.

I have gone through the usual troubleshooting steps: restarting iPad, switching to Airplane mode and then turning the Airplane mode off, logging out and logging back in with my Apple ID, connecting the iPad to another Wifi etc. Nothing works and my payment method should be fine as well. I do not want to fix this by deleting the apps and installing them again, because I do not want to risk progress and purchases in one game (which I cannot play unless I update it). The game does not transfer purchases made with app-internal currency, only purchases made with actual money, so this problem cannot be solved by using another device.