Can't change monthly usage limit, "must be on a paid plan..."

“You must be on arrears billing to manage usage limits”: looks like this limits page that another also discovered is then rolling out to more users.

It seems a massive oversight if they didn’t think “what about the monthly limits previously set that can no longer be altered?” - getting your account shut off for the month at day 8 because of a setting you now can’t access!

Worthy of immediate escalation, so I will pass it along.

You should also contact via the “help”, and have staff support manually set your monthly hard limit to the maximum you might ever use, explain the new UI that won’t let API developers see the previous setting still in effect.