Tuya binding doesn't work - only shows "No thing types can be added with this binding."

I followed the instructions step by step and it just doesn’t work.
Added 3rd party location of:
https://download.smarthomej.org/addons.json

Running:

openHAB 4.3.0.M2

Release Build
Main UI Commit 0a3fb925

So next I tried to uninstall through the UI, and get an error message that installation failed. I then go into openhab and check it in feature list, and it shows “uninstalled”. When I reboot, it comes back, but same problem wit the no thing types can be added shows up.

I saw another post that said to use this 3rd party location instead:
https://download.smarthomej.org/addons-snapshot.json

But since I can’t properly remove the other one, I can’t ever use this 3rd party to install one.

So what’s next? Is there a proper way to uninstall the old one, and is the addons-snapshot the correct one?