If you are using a custom domain for your membership site, then you'll need to input a license key from JW Player in order to remove the logo. Please follow the instructions below.
- Login to your Site Owner Control Panel and go to >Site>Settings
- Scroll down the page and find the section titled "JWPlayer License Key"
- Paste in your JW Player License Key that you got from http://www.jwplayer.com/pricing/ and press save. That's it!