Major - Cannot Upgrade Fab Licence

I think I am having further issues related to this, Only I (the project owner) can launch the project. If anybody else on the team tries to launch they are met with this error -

We have removed the referenced content but other members still receive this error -

I very much believe its tied to the FAB store content and has left some sort of reference I cannot remove, will a refund do anything on the back end to remove this?