I locked myself out by trying to change my password. To confirm, and for security, the site sends an E-mail for verification - except it didn't and I couldn't log in until it did.
Scratting around I found an E-mail addy for a member but no reply, it's probably defunct. Created a faux Facebook account and went the to the Nottstalgia page to try and make contact but it also appears to be defunct, last post 2019, sent a message anyway. Somtime later a reply said a ticket raised with Invision, no indication who the reply was from.
I tried making a second account but it fail