Hello, I like to know how to connect or link my OneNote in desktop PC to OneNote on my Mobile phone, please?

My OneNote email address on the desktop is different from my OneNote Mobile phone, when I try to make a new account for the mobile phone with the same email address as my desktop, OneNote refuses this...

I'm used to working with Windows Keep, connection there is very easy, now I like to know it's possible with OneNote in the same way?

Maybe someone can advise me how to do, please?