[Problem with one 7D2D key]

Hello, I have a problem with one 7 Days to Die key. ¿Who should I contact to help me solve it?

[Any idea how to fix this?]

Long story short: my game crashed, I logged back in, my Drone was nowhere to be seen, I went into Creative Menu and spawned myself another drone, tried to summon it and got the message: "Max Deployed Drones Reached", so I was looking for that exact phrase into the .xml files (I didn't modify a single one) to see if I could clear it so I could deploy the new drone, but then my game stop working and now I'm getting this every time I try to start it and it never starts.

Please help !