Apple acknowledged the issue: https://www.apple.com/support/systemstatus/
Edit: Some people have reported this issue on iOS 15.7, and the Mac App Store as well, so this seems like it is not related to the new update.
Edit 2: Looks like Apple has fixed the issue (not reflected on the System Status page). Other users have reported that restarting their devices helped fix the issue
I was experiencing the same problem: unable to purchase or update any items from the App Store, with an error code (13).
I came across another thread here - Cannot Install or Update Apps in App Store - Error 13 app-store-error-13 - which basically suggests deleting a cookie-preferences file for the App Store. I tried it, and it indeed worked for me.
The steps are:
1) quit the App Store app, if it's open.
2) delete the file, which will be in: ~/Library/Cookies/com.apple.appstore.plist
3) restart the App Store app, and try purchasing or downloading/updating something.
Let us know if this fixes the problem for you! :-)
I reinstalled OS, because i don' t have any other ideas.
WHYYY WHYYY WHYYYYY I am going insane. I have done every possible work around when trying to create an apple ID, however I still got the same error message. "Your request could not be completed at this time. Your account cannot be created at this time." I've contacted Apple Support (since that's what others recommended, something about a blocked email) and they were unable to do anything for me. I am not putting in any false information, I've doubled checked. I am actually out of ideas. I've tried going through the app store, icloud website, icoudfindmy, apple website, on my phone's settings, on my phone but on a website, itunes, please help.