Point 3D model GLB very dark

[Styrian123]

Good day,
qgis2threejs is a very powerfull plugin which I use a lot - thank you for developing and supporting!
I run on the following probem, which I have no idea to solve:
Visualizing a point > type: 3D Model with a glb file.
In e.g. glTF viewer my glb file is brightly textured but when loaded in Qgis2threejs Exporter and in the browser it is extremely dark textured - see screen shots.
Any ideas where to change settings for a brighter texture?
Kind regards from Austria,
C.

[brsl94]

I also have this issue. Any luck in fixing it?

[Styrian123]

If I remember correctly in the past there was the option using OBJ+MTL+Image for 3d models.
I had this problem at that time too. The solution was to change emission value within the MTL-file.
But no. No luck using GLB so far.