Deleting Telegram Trigger

I am having trouble with a couple of workflows on the Telegram trigger. The bot I was using on the first I tried to deploy to a group chat and it didn't have the right permissions and by the time I got to it's settings it was just firing errors and then even more when I deleted it.

I changed the key on the TG bot and updated that to the workflow which was still blocked by errors.

I have now created a new bot and updated the workflow but again it appears blocked by the previous errors.

So I duplicated the workflow and added the new bot trigger and even that keeps failing and it won't accept 'get data' even though I have sent messages.

I just tried to delete the TG trigger and it said it wasn't possible to delete the trigger.

Does someone need to take a look?