I am unable to excess my files it shows in my stuff but can't seem to open . Any advice as I use this app daily and been having this problem for a few days ?

First of all,  can you see your files in: https://www.adobe.com/files/ ?
This is the website you can go to access everything  that is stored in the Adobe Cloud, including deleted files that are kept there for 30 days (assuming that you have enough storage space left)

If you can see your files there, you’ll know they are saved and safe. 

Secondly, there’ve been a glitch a few days ago that have been fixed since by the team, so you may need to logout of your account and log in again, and see if it now works as intended.

There’s an update here:

If you’re still experiencing issues, you can read this but if eventually it’s not resolved, feel free to come back and update on the steps you’ve taken, the device you are using, including the browser you’ve used...