Interesting that it has always been available (minus ads and streaming videos, which none of us miss) until today, though.
The algorithm probably tripped on some sort of word today that flipped it to banned. Most of this stuff is simply general parsers that make mistakes. Typically, the systems will err on the side of caution if anything hits a red flag. They can also use counters. Hence, it may work 1 day but the next day it didn’t because the count level was higher.