You will need to speak directly to Apple if a pending sale is not completed. There is likely a payment issue. Until you clear the problem directly with Apple you won't be able to use the account.
M1 Mac mini, macOS 13; Watch, series 7 GPS/cellular, watchOS 9.1; iPad Pro 2nd Gen, iPadOS 16.1; iPhone 12 Pro, iOS 16.1; TV 4th Gen, tvOS 16.1; HomePods, audioOS 16.1 and Airport Express w/ Airplay 2