I did not compress the file. I just used the native Export>3D Graphic> as a DAE file in SketchUp 2017. This same model exported just fine from SketchUp 2016 that is why I suggested that you might try to talk to the SketchUp Support Team at Trimble to see what they might have changed in the export process.
Yes, I was able to view the file after you uploaded it just fine. Of course, I cannot edit the 3D settings but if we can get this working correctly it provides another alternative even though the Sketchfab Uploader plugin seems to work fine with 2017. Perhaps Alex Schreyer (the author of the plugin) could shed some light on the subject since I think his plugin converts the SketchUp SKP file to a DAE as well.
That would bring up an interesting discussion as well. Since that is what his plugin does but his code does not allow us to re-upload a model, maybe the conversation between you guys could escalate the process of getting his plugin to allow the re-upload process.
I have to tell you that as I continue to learn how to use the tool better, I think it is pretty neat. I have a couple of very simple models (one I uploaded with Ale's plugin and one I uploaded from 2016 as a DAE file) that have some shiny metal which has been something I was struggling with.
Here are the links:
SketchUp Sketchfab Uploader Plugin version
SketchUp Pro 2016 DAE version
Let me know what you think