Shapes/Drawings Aren't Selectable

I'm using the latest version of Chrome on both a chromebook and a Windows PC.  I'm not using any b rowser addons/extensions for Roll20, and other extensions are disabled. In my Temple of the Black Earth map, I'm unable to select about half of the shapes I've created (all filled squares/rectangles) that are on the map to hide areas my players haven't explored. I wasn't able to find any answers to this. It's only this map; the others are fine. I've tried changing the layers of things, but to no avail. The grid lines seem to be layered over these specific shapes and not the ones that I can select, like they're underneath the grid, but I can't reach them. Any suggestions/help would be appreciated. Thanks

If the grid is over them, then they are on the map layer which you'll need to be on in order to interact with them. Additionally, are these shapes, or are you using fog of war to block the map out, in which case you'd use the reveal tool to clear the fog of war.

If they are shapes, you can drag a selection around them while holding the Alt key down. Only shapes will be selected (not images), and dragging makes even thin lined shapes easier to select.

[SOLVED-ish] Thanks to you both. I'm not using fog of war. Using Alt did help, but there's definitely something else going on; the only way I can select them is by zooming in all the way and scrolling around, randomly the shapes are clickable and not clickable. If they aren't clickable, I just scroll around or zoom in and out a few times and eventually a shape is clickable. It took a little while, but doing this I successfully got my shapes back to the token-layer. Thanks again