CDR.Link is not opening new tickets

reported by @championquizzer and @nina to CDR Link support:

Since yesterday our support team (cc'ed in the email) has been receiving
a lot of user support tickets from users in Iran via the
@TorProjectSupportBot on Telegram. We are running into the following
issues on our cdr.link instance:

1. We reached a limit of 200 tickets somewhere around early morning (UTC
time) today and haven't been receiving any new tickets ever since.

2. For the tickets we currently have in queue, response delivery is
failing with the error "Delivery failed: "Unable to send telegram
message: 400 Bad Request"

I'd appreciate if you can please look into this. Thanks a lot!