All currently available Robe GDTF files have been converted to use the glTF mesh format, in the form of glb files. You can read more about it here https://gdtf-share.com/user-page?name=Robe+Lighting+s.r.o.&page=home . This change has happened already in October/November, together with many other improvements and changes like converting the Connectors into Wiring Objects, adding 2D and also including the above mentioned more streamlined linking of channels to particular geometries. Let us know in case of any issues.