@Arvin Willy5FCE Thank you for reporting the issue. It is possible that this was an intermittent issue and by the time you sign back in it will be resolved. Our team keeps a close watch on the site so when something like this happens they generally know about it and are working furiously to fix it. You can also check site status here: https://status.adobe.com/
However, it is also possible that the site is fine and the issue might be somewhere between Adobe Stock and you. If you are still having issues please clear your browser history and sign in again. If that doesn't work try signing in from a different browser. If one works and the other doesn't then we recommend disabling any browser extensions, some have been known to interfere with the site and you may need to use the process of elimination to find out which one.
Anti-virus can sometimes cause issues. Try changing your settings to see if this resolves the issue, especially if it is a browser extension.