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Can't sing into Sling

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Anyone have any suggestions on how to log into Sling? I get a "A webpage is slowing down your browser. What would you like to do?" message and then the URL goes to "about:blank." I have no problem signing in on Edge, but I really don't want to go there. Ran CCleaner, made sure to clear all sling cookies, whitelisted sling for uBlock origin. (Running FB Container - does that have any effect?) Help?

Win10 Pro 20H2, FF 84.0.2

Anyone have any suggestions on how to log into Sling? I get a "A webpage is slowing down your browser. What would you like to do?" message and then the URL goes to "about:blank." I have no problem signing in on Edge, but I really don't want to go there. Ran CCleaner, made sure to clear all sling cookies, whitelisted sling for uBlock origin. (Running FB Container - does that have any effect?) Help? Win10 Pro 20H2, FF 84.0.2

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Have you tried in safe mode? Anything blocked?


Firefox safe mode: Click the menu button menu , click Help and select Restart with Add-ons Disabled…. Firefox will start up with the Firefox Safe Mode dialog.

Modified by jonzn4SUSE