You are welcome to share private information via the contact form https://metabox.io/contact/.
We also mention this in the support policy
We do not support via email. Our contact form is used for sending private info (in case users don't want to public it in the support forum), refund requests and cooperation suggestions.
We want to users create the topic in the public forum because Meta Box works like a framework. There are a lot of cases to use Meta Box to build your WordPress site and it would be better for other customers to search and find the solution in the public forum instead of creating the same questions.
Please share your video via the contact form, I will check the issue and get back to you as soon as possible.