Standalone Denon DISC-TO-DISC (media?)

I have a dual tray Denon cd player that has a recorder and a player. I can’t seem to do disc to disc copies and I think it may be damaged; but I am wondering what type of discs people use for this process?

The recorder plays fine, plays cdrs, but says “Use Audio Disc” when I try to dub. I have tried three different brands. Do I need something special?