I had issues earlier tonight to access it using mobile device. It worked perfectly on the pc though.
I was on IPhone. Intresting.I had no trouble with using my Android phone.
UPDATE
Our next Unearthed Arcana is coming soon! In the meantime please follow the survey link below to let us know what you think about the fighter, rogue, and wizard.
Additional tidbit from the main website:
So expect another UA to come out soon. I would hazard to guess the second week of January, after everyone gets back from the holidays.
Which subclasses are those?They may be frantically trying to come up with some new subclasses (especially for wizards) to replace the heavily hated ones in Xanathar's 2.