Why not able to combine files despite entolled for monthly subscription
Hope you are doing well. Sorry for your experience with Adobe Scan.
The time of your post, we had maintenance services of the servers being carried out which could result in the issue.
Would you mind trying the workflow again now and let us know if it works? If not, please share a screen recording of the workflow you are followng for better understanding and assistance.
Look forward to hearing from you.