Currently, M5 clamp is not yet compatible with the dolphin xp005 key cutting machine (wait for feature firmware update). It is for Condor II and Dolphin II.
If xhorse app asks to use M5 fixture after upgrade, go to Device information at bottom right-then Cutting setting then change clamp to M1/M2.
If xhorse condor ii asks to use M1 clamp, you do the same. In cutting settings, change clamp to M5.