lank Screen: Can't access page of Adobe Firefly

Here is a thread from someone who reported a similar issue on Windows and the solution was a Firewall issue. Check if this helps resolve it for you:
https://community.adobe.com/t5/adobe-firefly-discussions/blank-screen-can-t-access-page-of-adobe-firefly/td-p/14033230

yes

And I'm guessing you have cleared the cache and cookies?
To confirm - have you been able to accses Firefly in the past?

already tried different browsers. still not working

I am able to connect to Firefly. Try another browser as a test.