Hello Peter,
Thank you very much. However, your answer didn't help, as I had already read all your documentation before I sent you the ticket. So, basically, you transferred me to WPML support.
P.S. Based on what I can read from your message, you don't wish to handle my case and are easily transferring me to WPML, which is not acceptable. WPML can also direct me to ask MetaBox support in the same way. I hope they will take the time to read and understand my case, unlike you.
Regards.