Hey,
What is your os/browser? Does the rest of the app work? Can you switch to plan view for example?
the rest of the app does work, but the 3d view does this weird thing where it starts working but after a little awhile it will turn into the greyish screen. the browser i'm using right now is google chrome.
It sounds like something is wrong with webgl in the browser. I don't think I can fix it, sorry.
Could you turn this into an app maybe? like one you could download on a phone or on a desktop?