I changed phones recently and removed my old phone from my devices. After installing avast on my new phone i logged into my account, looked in my devices and my new phone isn’t in the list. How can i get it to show up? Thanks in advance 
Well I feel like an idiot… Seems I was logging into with my gmail account on my phone and not my hotmail account. I apologize for my stupidity.
No problem. Glad you figured it out.