Hope you are doing well. Sorry for the trouble with using Acrobat Premium.
I checked the email address that you have registered on the community and could see a cancelled Acrobat Premium subscription. There were no traces of an active one.
If you have a different email account through which you made the purchase, feel free to write back, so we can investigate further.
Meanwhile, here are some steps you can try:
Please check logging on to the web portal and let me know if you can use the features there:
3. Log in back to the application using the correct email address.
If this does not help, you may try restoring the purchase and check if it works. To learn more about how to do so, click here: https://adobe.ly/42RsyCq.