My advice is it’s a brand new account with self proclaimed awesomeness. Implies he’s back here but account is new. So what was the prior account. The post history to that account would be helpful. Zero details on the actual kinks. Kinda just low effort approach. You rushed into this and need to slow down do some research and get some proper time involved vetting in before jumping into serving someone. Likes dislikes limits etc all need to be discussed. If you were tasking on the same day you first spoke its likely not a good thing.
Clipped from his posts.
I am back here in search of a new sub.
(Account is brand new)
I am fairly experienced and very flexible.(suggests compromise but your exp shows not exactly)
And i am sure, i am one of the most creative dom(task vise) you will ever met. ( red flag)
i have trained very fresh ones (red flag)
i am flexible, so everything can be solved. ( again red flag) (also proven not to work based on your encounter.)
Anyways learn from mistake so you can be better in future. Happy kinking.