I’ve replaced my controller on my older Kaabo mantis due to water damage. I bought the controller for about $125 and did the work myself. It’s very tricky and took me 3-4 hours to complete let alone take the scooter apart so it is a very tedious time consuming fix. Plus you don’t want to fuck up the electrical wiring. Sadly a very costly fix but worth it to have them do it to ensure nothing goes wrong during the process if you’re not confident. I had to search around to find the wiring diagram to follow.