PC account vs iPhone account

I have a Seeking Alpha account on my iPhone and am username Greg4444. I use Google sign-in. Yet when I do the Google sign-in on my PC, I am not Greg4444, and none of my portfolios are there. I like the way I have my phone set up. I wish I could see all that on my PC. If I try to change the username on PC to Greg4444, it says username taken. It is like I have 2 separate Seeking Alpha accounts, one on phone and one on the PC.