For the other folks who have lost their connections, I'd suggest borrowing a gimbal and camera that's known to work and try that. What may have happened is that the main control board in your gimbal has been damaged and will no longer transmit a telemetry and video signal, or at least a video signal.
Last week I was trying to bind a "new" used wifi module on a used P2V+ I bought, and wound up ruining the wifi module on my existing P2V+. I also apparently ruined two main gimbal control boards that had been working previously. I replaced one of the ruined boards with one I had lying around and everything worked.
I know that I overheated the module from my existing P2V+. I can see warped components. I don't know what would have damaged the two boards, but they will absolutely not bind anymore.
Last week I was trying to bind a "new" used wifi module on a used P2V+ I bought, and wound up ruining the wifi module on my existing P2V+. I also apparently ruined two main gimbal control boards that had been working previously. I replaced one of the ruined boards with one I had lying around and everything worked.
I know that I overheated the module from my existing P2V+. I can see warped components. I don't know what would have damaged the two boards, but they will absolutely not bind anymore.