You can pick up an aftermarket display/controller:
https://electrobikeworld.com/products/35a-controller-rad
https://electrobikeworld.com/products/kt-lcd8h-color-for-rad
I know rad might've said the controller, but also ask about a replacement display if you can get one. I've observed screen failures here on the forums with much greater frequency, matching the symptoms you've described.
https://electrobikeworld.com/products/35a-controller-rad
https://electrobikeworld.com/products/kt-lcd8h-color-for-rad
I know rad might've said the controller, but also ask about a replacement display if you can get one. I've observed screen failures here on the forums with much greater frequency, matching the symptoms you've described.