Their data cap notice interstitials are seriously obnoxious, I ran into the same problems. I'd end up with "stuck" pages where it would just randomly appear ev

Their data cap notice interstitials are seriously obnoxious, I ran into the same problems. I'd end up with "stuck" pages where it would just randomly appear even after I clicked close. What I eventually had to do was open a browser tab with no adblock (perhaps Chrome Incognito), close the notice, restart my router and modem to flush DNS, then flush locally to be sure it's gone. That usually worked.