Make sure that you’re comfortable and ask all the questions that you need to to understand what you’re receiving and to reassure yourself. If you’re the sort of person that needs to meet face-to-face, then arrange to do that. If you prefer to do it over the phone, or on a Skype call, or a Zoom call, then do that.
If you have fears or concerns about things that may go wrong, ask how the production company would prevent that from happening. The main thing is to get involved in a dialogue and talk all of those things through, and all of those scenarios so that you can really reassure yourself that it’s the right company to move forward with.