Netgear account problems

I have three My Netgear accounts because I had different hardware. But I can't find the option to delete them. I would like to delete all 3 account because of problems with registration and problems with accountnames to get external acces on my Orbi with the Genie and Orbi app . I can still Log in to all accounts as they have different email addresses. I even tried to change e-mail adresses on all of the accounts that a have but its not working correctly. Please let me know what a should do to delete all the accounts.

With Kind regards,

Roland