As per the issue description mentioned above, you are getting conversion failure when trying to convert pdf to word/excel, is that correct?
I just checked your account and I see your subscription to Adobe Export PDF is active. There is no issue with the subscription status.
Try the troubleshooting steps given in the following help document:
You may try exporting the file via browser: https://cloud.acrobat.com/exportpdf
You may also refer to the following forum threads discussing the similar issue:
Let us know if you need any help.