I am assuming that you take your SD card, insert it into the card reader. My Mac Book Pro only has USB-C ports. My card reader also has USB-C-plug. I plug my card reader with th SD card into the Mac Book Pro USB-C port and the Icon appears on the...
Agree with Cafguy, a shinny surface probably confuses the downward sensor. Sorry I’m old fashioned, I always use a folding landing pad, 1. To provide a clear source for the downward sensor to pickup on and 2. To prevent any dirt from being blown...