Filling this in further would mean I am in breach of the security & privacy policies of the company I'm contracted to. I tried to access the Support section. It also required an account to be set up first.
I then used the Live Help feature. After explaining my scenario to the operator, he/she then laughed, said I don't know what I'm talking about, before breaking the session off.
All this because I wanted to give a company some money.
I have now trawled back through all the WP plugins I have purchased to date & not a single one of them required an account to be set up or any kind of registration prior to purchase. This was always an option.
Despite very carefully not registering anything on the WPOS pages, I have received an email from them indicating I am "now successfully registered" & here's your password.
Arrogant in the extreme…