This is what worked for me,
step 1: Check for the driver update, "Silicon Labs CP210x USB to UART Bridge (COM4)"
step 2:(USB 3.0) Merlin, Serial comm, COM4,
ping-pong mode, -, 0.0%, 532.2L/s
step 3: rectangle, -5, 0, 215, 215, 206
step 4: 1, 1.75, yes, no
step 5, none, 1, no