I've recently acquired an Samsung Active2, and I can't install most of apps avaiable on Galaxy Store. I can't even see them.
The Galaxy Wearable app comes with an embedded Galaxy Store, but it's somehow limited, I can browse and install watchfaces and skin, but the real useful apps doesn't appears in the search.
In the Store Home page there are some featured apps, that when I click on them it redirects to the Store Home page to download skins only.
I guess it's not possible to install the proper Galaxy Store app on other devices.
It's not possible to install galaxy watch apps with a non-samsung smartphone?
What type of device are you using with your Galaxy active 2 watch?
Are you receiving any error messages?