Cant buy the Pro Version Microsoft Store Problem

Questions
1

I downloaded the latest Version of djay pro. I’m on win 10 Version 10.0.19045 (latest Updates)

I cant buy the Pro Version or start the trial cause
I get the Error Message:
Unable to complete this transaction.
Please Update the Microsoft Store, …

I of course updated everything. Its kind of annoying that the Program is tied to my Windows Account.

2

Hi @czk666, the latest Windows builds from App Center are now signed with a self-signed certificate. In order to be able to install these builds, the certificate embedded in the MSIX needs to be installed first as described here (required once per PC):
(This is not required for any builds installed from the Microsoft Store.)