Allstartblack + Refusing to fully uninstall.

I’m trying to  fully uninstall allstartblack so I can upgrade to windows 25h2. I have run the uninstalled. Used IoUninstall to remove everything else such as windows registry. I did find a script to try and force the removal of the last few bits go. Windows set up still complains due to security issues with the product. The usual error that’s being given.

I am wondering is there something that’s remaining after the uninstall blocking this. Interestingly, another computer which I hadn’t used allstartblack on didn’t complain

Is there a solution for this? I did decide to upgrade to Windows 11 Pro on both and the one with allstartblack doesn’t.