koobas.hobune.stream
Cannot install "Mac App Store Validation" enabled .pkg file on MacOS
Unity version 2019.4.15f1
MacOS Catalina 10.15.2
Following documentation here: https://docs.unity3d.com/Manual/UnityIAPiOSMAS.html.
At the bottom they have a section for Mac App Store. It says I must enable "Mac App Store validation", which I did
I modified the Info.plist as required, ran all the codesign and productbuild commands with proper certificates, deleted the .app, and tried to install .pkg 
It installs, and shows in my Applications. But when launching, I get a popup to login to App Store 
The documentation says to use test iTunesConnect account. It's now call Appstore Connect, but yes, I created the test sandbox account and tried that. Tried deleting and creating new account. Doesn't work. When I use a test account, it complains of incorrect password (I verified 500% the password is correct, recreated the account multiple times, tried creating new test accounts many times, even waited 24 hours once). When I try to use my real Apple ID, it accepts it (no errors), but then displays this screen again.
If I don't enable "Mac App Store Validation", this isn't a problem. But documentation says it must be enabled to test purchases.
