UPD Fixed!
Woke up in the morning planning to tweak Notion connectors via Manus (yesterday it had just offered to write code for the API), opened the chat — and saw Deleted Account.
Started digging. Turns out it's a widespread issue.
Most likely, Telegram's automatic anti-spam filters kicked in. The launch of the always-on agent caused a sharp traffic spike and thousands of simultaneous connections. To the algorithms, this looks like a typical bot attack.
Besides, this is "professional" for Manus. Last year their official account was similarly banned by X (Twitter) at the peak of hype (you can automate your Twitter account through Manus). Back then, access was restored within a day.
If your chat also disappeared — don't panic. This is a temporary block on the platform's side, not a service shutdown. Waiting for restoration.