Deleting an old Event producer

i am having Two sites one as Event producer and the other as Event Consumer
i tried to make both sides communicate with each other but with no success
so i decided to delete the corresponding Event Producer from the consumer site, but once i did and re-create the same event prodcucer again an Error message saying the Event producer already exists

After deleting the Event producer, there is no more event producer shown

The Error message once i tried to delete the event producer

The Event Producer Last update table

So the question is
what is the proper way of deleting an old event producer so that when i re-create it again there should be no error

the same issue with me did you find any solution.

@ibrasec @alkuhlani Go to the Doctype List > Event Producer last update and delete this as well.