Surely is weird, probably the core was only partly removed from the old account.
I have emailed the old and new account emails and also the core id to that address, thanks for the assistance
@mdjarv it’s possible that the Core is claimed to a false account like "email@gnail.com" or "email@gmail.com ", with an extra space at the end. Feel free to send me a PM if this doesn’t get resolved by tech support by end of day Monday.