We are sorry that we can't check the problem of why Vimeo doesn't play well since our country has blocked that site.
But you may try to check on how did you put your Vimeo URL in the video link box..
You can't place a regular vimeo link into the text field.
Basically, take any regular vimeo link, add player and video in the appropriate places, and it will work with your theme.
https://vimeo.com/"your link video" would not work.