There is only one bug which is part of oneCloud core:
owncloud/core#17817
In ownCloud 8.1 there is a way to install apps direct from appstore. For experimental apps you have to set an option to activate.
But this app is not listed.
Can you remove the "maximum required" on the owncloud appstore?
Another problem could be that you only linked the master.zip which does not have the correct file structure.
I tested it on ownCloud 8.1. It's working.
There is only one bug which is part of oneCloud core: owncloud/core#17817
In ownCloud 8.1 there is a way to install apps direct from appstore. For experimental apps you have to set an option to activate.
But this app is not listed.
Can you remove the "maximum required" on the owncloud appstore? Another problem could be that you only linked the master.zip which does not have the correct file structure.