You can no longer use Bitcoin on Windows Store
If you want to do your payments anonymously, then Bitcoin is the best option for you. However, Bitcoin is also a problem since many people use Bitcoin in the DeepWeb without being traced.
The number of companies who support the Bitcoin was not very high, and recently Microsoft made an announcement indicating Windows Store no longer supports the Bitcoin. If you had balance in your account, still you will be able to use it, but if will not be able to refund this balance.