1. Make sure FORTIN is selected as the starter in the MyCar app
2. Make sure FORTIN2 is enabled in the EVO-ONE (Step 1 of the guide).
3. Must be using their HRN-LLRS-01 harness. It plugs into the BLUE port of the EVO-ONE.
Also, try this paring instead. You will be able to see if the EVO is actually in pairing mode.
Ignition ON-OFF-ON (side red led will turn on)
Press and Release brakes 4 times (side red led will blink on every brake press)
Side red led should be Blinking rapidly at this point. This means EVO is in pairing mode. As long as the MyCar sent it's pairing command, the led would of also briefly stopped blinking.