https://www.cnet.com/news/mcgregor-mayweather-glitches-ufc-fight-pass-showtime/

Watching the fight wasn't cheap (nearly $100 on pay-per-view), so naturally, those who had technical issues as fight time neared -- on whatever platform -- were fighting mad. 

At 6:28 p.m. PT, as the undercard matches preceding the event aired, the UFC admitted on Twitter it was having technical issues with its Fight Pass streaming service due to the overwhelming interest in the bout. It promised a quick resolution.