YouTube eventually responded, intending to leave a message in two tweets. However, it only sent one tweet, and just... forgot to send the next part, I suppose.
"Upon careful review, we've confirmed that your channel was suspended for violating Google's Terms of Service," says YouTube support. "While it didn't violate any YouTube channel monetization policies, it's linked to a Google acct that has an issue."
Since we never got the second part of that message, we have no idea what caused the channel's ban, and why it kicked in shortly after Wiles shared a VOD of her Baldur's Gate 3 stream. In any case, her Twitch channel is still up, if you're hoping to tune in to her next Baldur's Gate session.
Absolutely bizarre. What kind of Google Account issue can get you banned from YouTube? They already killed all their other social platforms, so it can't be something she did on Groups or Chat. (Did these get merged into + and Hangouts before being killed off? They've had so many of these.) Maybe she did a chargeback on a Play Store purchase or something? I feel like that would be pretty obvious to her, though, and she seems as confused as everyone else.