Shotgun menu doesn't appear in unreal (4.25 & 4.26)

I am trying to integrate shotgun to unreal, i’ve compiled a linux version and installed a windows version too but the menu shotgun doesn’t appear in unreal.
I followed through this documentation since we already have a toolkit config : How do I add Unreal integration to an existing Toolkit config?
I’m not getting any error on 4.25, but i’m getting the python 3 error on the 4.26. (that’s why i installed 4.25)
I’m launching the app from the shotgun desktop, so everything is working to this point. I’m able to see and activate the shotgun plugin, but nothing happens after that.
Let me know if you need me to provide more info.