you can, in platirium play you only need log out and log in in other account.

As soon as you download the pc client, you can log into your account. One you log in, only 1 device can run at a time. But both will still be logged into the account. :)

As everyone mentioned, when you download Plarium Play on your computer you can log into multiple accounts through it.  Just use the 3 elipses in the lower left hand corner to jump between them.  You just can't run the game on both your phone and PC at the same time

Ensure  you  connect  your game account  to  plarium account.