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Hello!
Did you install update for Messenger or reinstall it ? If you reinstalled Messenger, check please studio -> messenger -> settings. Option Server URL for messenger should not be empty.
Provide me please with access info to your studio panel via PM, I will check.
Problems is connected with Jot Server's certificate and is not connected with last update. I hope your hosting solved this issue.
I sent a support request with the info you gave me. Thanks again, Alexey!
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