Streaming on laptop not working
Lenovo T430 laptop. Been streaming live tv for 2 years and suddenly yesterday it won't load. Spent 40 min. on phone this evening with xfinity "ambassador" having me do everything I've already tried - restart modem, restart laptop, clear cache, disable Malwarebytes, add xfinity dot com slash stream to Malwarebytes exceptions, use private browser, try different browser. I use Firefox but tried in Chrome. Same thing. The 3 dots just keep flashing. I don't have any other device to test to see if it works on phone or tablet. I finally had to hang up since the person was obviously not going to transfer me to someone who might be able to figure it out and I had to go. I know if I call back I will have to start at square one with reset modem, restart laptop, clear cache, etc., etc., etc., A frustrating waste of time... Please help?