Avast Firewall Blocking Ubuntu Windows Store App

Avast Firewall is on and set to ask for connections to allow or block.
I installed Ubuntu Windows Store App, but could not connect.
Avast Firewall did not ask anything. It always asks even if the program is a Windows Store app, but for Ubuntu app, it does not.
I tried to add it as a rule, but it only accepts exe files.
How can I add a Windows Store App (or in this case Ubuntu app) as a rule in Avast Firewall or how can I stop Avast from blocking Ubuntu App?
(Adding C:\Windows\System32\bash.exe as a rule to allow did not help.)
Thanks.

Version 1909

Unfortunately, those instructions are for only exe files.
I have not found a way to create a rule for a Windows Store App.

It is an office computer, so it is paid, yes; but not me. Not my account.
Avast Support Forums has lots of threads with similar problems with no replies from Avast.
From what I read, it is a problem that has been going on a few years with Windows Store Apps.

My latest diagnosis is Ubuntu Windows Store App is a hidden app, which means Avast is not able to create a rule for hidden system files.

The only Ubuntu.exe file I could find was in C:\Users\User\AppData\Local\Microsoft\WindowsApps
Since the whole AppData Folder is a hidden folder, Avast is not able to recognize it, even though it sees the file.
(Hidden files are set to be shown on Explorer)

Currently, only solution is disabling Avast Firewall when using the app if the app requires internet, which sucks, especially on a office computer.