Unable to download app from AppStore

I'm developing a VPN app. It's already in AppStore.

After updating to Big Sur on my developing mac I started getting an error when hit download button:
Unable to Download App.
"Bubble SecurityCloud" could not be installed. Please try again later.

On an other mac it downloads and works fine.

I tried removing defaults; also tried removing network extension using pluginkit, which I usually need to do in order to switch between development and AppStore versions.

Is there any system files that can be cleared to fix the problem?
Unable to download app from AppStore
 
 
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