Just a closure on this.
He left all conversations we had and apparently sold the account to someone else, not honoring 4 out of 5 items of our deal. The only one that worked was the files transfer to my account because it didn’t depend on him; it was done by IPS. He even sold some files twice (to me and to another developer), who only got the money back via PayPal dispute!
So that’s it, if you purchased the resource on his site and you can’t prove it somehow (credit card or PayPal transaction), you will have to purchase it again on IPS, just in case you want to get updates.
I will request to lock this topic.