Help please, sketchup shop autosave problems

HI There,
I hope someone can help me!
IM am using sketchup shop in chrome. I saved a model I was working on, thought it had saved properly and exited. However it now won’t open. The saved file is in the sketchup trimble connect however the image next to it is black. I try and open but nothing happens. I have googled this and advice is to go directly to trimble connect and open a previous save, however when I do this only one of my models is there. I have 7 saved in the ‘sketchup file’ that are not. (The one that is visible is saved in its own file) I have looked in trimble connect before and found other models so not sure what has happened.
No idea what to do. Heeeeelllllpppp please!
Thanks in advance