use app that I was already buy in the microsoft store without buy twice

I was already buy metamoji note version in google play. For use with notebook windows I try to install in my note book. but, I cann't install Metamoji Note version but just Lite version. For install metamoji Note version, Just apeare in the web page 'Buy Metamoji Note that I way buy already. For use it, I have to buy with Microsoft Sign In? With Google Play Sign In, I cannot use it in the Windows Store? Please respond for it what I have to do? My english is little poor but maybe you understand it.
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