How to play on the same Minecraft bedrock account across devices?

Solution 1:

I've done this without issue. Are you using Bedrock Dedicated Server or are you idling the Win10 version as a LAN game? If the latter, then yes, you'll be two separate accounts. You should not have this problem, however, if you are running your world via a Bedrock Dedicated server and not connecting simultaneously with the same account.

One thing to note...if you move a local save file to a dedicated bedrock server, your account goes from being a "local" player to a "remote" player which is a completely separate inventory. An easy work-around for this is to throw everything in your inventory into a chest before migrating a local save to a BDS server.