To import videos from your vimeo account you have to generate access token, here is simple steps to do that.
Go to your Apps page: https://developer.vimeo.com/apps
There need to create simple application, click on the “Create an app” button
Fill in a name and description and click “Create App”
After creating an App select the app to generate token.
Click Generate Access Token in the left-hand navigation column.
Select Authenticated (you) if you need to interact with private data on your account
Select public, private, and video_files scopes (there is no need for others)
Click the Generate button. The page will reload and the token will appear unobscured in the Personal Access Tokens section.
Copy the token string and keep it in a safe place.
Go back to Cincopa’s Vimeo importer page and paste the token :
Click on the Import button to start importing