Help on buying DJI Mini 4K Camera Drone 4K UHD

I am looking at purchasing a DJI m 4 on ebay

Basically someone’s originally purchased this from Amazon, logged into it from their dji account and then returned the item back to Amazon without logging out and flying it.

Due to this I wont be able to attach it to my own dji account but it will still fly and do everything it should with the remote supplied,

Is there a work around using Litchi?

Thanks for your help and advice

If its a mini 4k,that isn’t compatible with litchi or any other 3rd party software, as DJI never added it to an SDK