I can't get the parametric model maker to work at all

I saved an .f3d file from a model on this site. it will NOT load into the PMM at all and gives no message about anything. No timeout, no nothing.
I’ve attempted to use this in Windows and iPadOS Safari. Same result from both.

Ideas?

You need to either use a OpenSCAD model. It’s a script-based modeling tool or a Fusion360 Parametric model.

Thanks, but first the software says it will now accept an .f3d file. Then it just sits there and does nothing. Yes, I know it is new but it should have basic functionality before being put on the site it seems.