Movie studio serial number is registered to my old email which I don't remember. As a result I cannot complete reinstallation of the program. I need your help
Ask your friends if they still have an old email from you.
We are a user - to user forum. If my tip doesn't help, contact support
You need to try what @walter-i. suggests as it seems that you do not have either of the standard options mentioned here available.
Ask VEGAS Support starts from here. You might also try Live Chat (visit www.vegascreativesoftware.com/support between 12:00 and 4:00 Central (currently GMT-5) Monday through Friday and use the chat widget in the lower-right-hand corner to chat directly with a support rep.). No guarantees though.
Thank you very much for such great suggestions. I will also try to contact a live-chat support if still have the problem. Have a great day