Update: I was able to reach Scott, and then Becca from tech support was able to assist me. They recently redesigned their website, and the "chat" button is now located in the lower right corner. Since I use two monitors at a wide angle, the button wasn't clearly visible, it looked more like a social media link. In any case, the issue is resolved, although no one knows exactly what happened. The entire directory was intact except for the .exe file, which was missing.
.png "ACUF Donor I")