Using the HTML5 tool to manage my baremetal server, on NameCheap hosting.
The response from every attempt to perform an install results in failure with an "incompatible license" error.
AFAICT this error message comes from GRUB and is normally about licenses in its modules. Since this is the installer my first guess would be some kind of corruption of the installer image or an issue with the USB stick it is on (if it is on a stick that is... not sure how you're loading the installer exactly on this machine).