Can I have 2 different dynamic DNS mynetgear.com hostnames for the same account?

Hi there,

I have had an mynetgear.com ddns for my HOME router and have assumed it has been there without any issues. Now I am at my PARENTS HOUSE and set up another ddns to mynetgear.com with different hostname (obviously) but with the same login credentials that I had with my home setup. Now I logged in to no-ip.com and noticed that there is only the new one from my parents house and the one for home did not exist anymore.

Does the router connecting to no-ip.com overwrite everything on the account (removes the other one)? I would like to have multiple mynetgear.com hostnames on the same no-ip.com account (to which Netgear creates the hostname), is it possible or what I am getting wrong here? Do I need new account per Netgear router?

My home router and parents' house router are the same Netgear R7800 model. I have bought 'em both back then.