This issue may not be experienced by users, with the December 1st 2020 update.
A user reported that they clicked the ‘buy now’ button, but it didn’t respond.
If you experience this, simply close the App by pressing on the back button until you see ‘Do you want to quit’, click ‘yes’. Then reopen the app. This solved the problem.
We don’t expect this to happen to many users. We are also studying the report to fix that as soon as possible.