Thanks Automan!
This enable and disable uberspace on which instance is that done. The main or the remote or both?
Is the nabucasa cloud connection and issue?
how does your host looks like? ip address, full domain or short domain?
Do it on all the instances.
Not sure if Nabu Casa connection is an issue. I don’t use it. If you see all the instances on the TS admin console as connected it should work
I did
it doesnt work. I guess I have an issue with Nabu Casa
Not sure what is wrong still.
You could do me a favor if you show my your format for the host in Remote HA. I have to exclude the obvious mistakes which I can make. I am doubting everything by now.
Do you do this on the remote HA, the main, or both?
I do it on both sides. Remote and main
I got it working. I need to leave the http:// out. These formats should be in the documentation but it’s not. Endless trial and error to figure it out on a non-issue 
It working now but I noticed that in the main instance I can’t change names and icons. The default icon is passed through. I can’t modify the icons in any form. And the naming with the prefix doesn’t look to good either. That means I have to give the entities in the remote already meaningful names referring to the remote and drop the prefix
Confirmed working on two instances running
HAOS
Core 2025.5.1
Supervisor 2025.05.3
Operating System 15.2
and
Tailscale addon version 0.25.0
Two days spent on trying to figure it out, and your fix did it for me! Thank you so much!
Glad I could help but I spent probably the same absurd time by trying .) that’s the magic of tinkering
You say integration but then go on to say in the add-on ? I’ve installed the TS integration and don’t see options for user space enable disable ?
Apologies just starting out.