Hi. Again, this is the Player Forum, not SUPPORT.
Only thing I can think of is to try clearing the browser /game cache & reboot your PC.
EDIT: @gamemaster touched on something I failed to suggest) try a different browser. While Chrome works well on some computers, it doesn't always play nicely with Diggy. I know somr players like Firefox & there's another one I've heard mentioned, but can't think of it offhand🤔
If still no joy, click the SUPPORT button under the game Settings wheel. Once on the linked page, scroll PAST the white seach🔍 box & choose a category to begin the form. DON'T type in that box as you'll be directed right back to this Forum.