Inimanager/installer Wont run

Inimanager, which was working fine up unitl recently, has just refused to open. I did install a windows update earlier today, not sure if something there busted it?...

So i started by uninstalling then installing from the website, but when i uninstalled it from the app list, it didnt run an un-installer of any kind, it just vanished from list which i thought was weird, but then the new file wouldnt run either, so i couldnt reinstall.

I then tried redownloading the install file, nothing changed.

Also tried an app called revo uninstall, which gets rid of all associated files to an app which removed bunch of stuff from appdata/roaming and appdata/local, every trace of the program, i also manually looked, also deleted everything in comm folder, then restarted PC and still wont install.

The logo flashes up for a split second and goes away. A few files re-appear in Revo after this process, but even after clearing them again, still does the same. Also i dont have an antivirus, just defender.

I then just went contact customer support, and when i press send, it says "There was a problem processing your request", even after refreshing page.

So no customer support either.

according to many posts doesnt seems to be uncommon, some as old as 3 years ago? one person even said they had it after a fresh install of windows

Anyone have this and fix it, or know of a solution?