I'm missing the addon store

I have installed the docking station on my Qnap Nas.
then Homeassist.
then homeassist supervision for my processor architecture armv7.

The system is running but does not go to active - other.
The status says:

3-11-27 14:32:51 ERROR (MainThread) [asyncio] Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x723f9470>

what am I doing wrong and where is the addone store.

I’ve been trying for 3 days now, I’ve redone everything several times and installed different versions and I can’t get any further