I have read up a few other topics, and none of the solutions helped so far. I imported a Collada file of a simple polygon from QGIS using a plugin qgis2threejs and the scale is all wrong. The height of the building is supposed to be around 13.1 m but on Sketchup using the measuring tool it ends up being around 0.68 m. I first thought the Collada file is importing it in inches or feet, but none of the conversions make sense.
Is there a solution to my problem?