We have one of our subscribers that is unable to register webhook using Status page Powered by Freshstatus | Live status.
This is the Webhook HTTP URL: https://prod-16.northeurope.logic.azure.com/workflows/6bbd0bff33f6406da6b6e511376c17ff/triggers/manual/paths/invoke?api-version=2016-06-01&sp=%2Ftriggers%2Fmanual%2Frun&sv=1.0&sig=cb64XeiRB9J93U0Qir7Q8DJ5V0MxL0Y49yR6TNPYkgo
It sounds like the portal doesn’t reflect to the changes announced by Microsoft, where old fashioned webhooks will not be supported: https://techcommunity.microsoft.com/discussions/teamsdeveloper/simple-workflow-to-replace-teams-incoming-webhooks/4225270