My Cloud HOME permissions for Time Machine

Hi te everyone. I’ve bought a new WD My Cloud HOME and compared with my previous My Cloud I discovered a big new (bad for my personal opinion…): I can’t create a personal local account (not the “mycloud” web account referred…) for enter into the Time Machine back-up. I can enter as “guest” and it’s very strange 'cause is how enter in your own home like “guest”. In attachment a screenshot of this problem. It’s true? Someone can tell me other good news about it? Thanks in advance for your help.