if you ar eusing adfree video player...sign on unity and click on licences....than click on get free licences( make sure your pop up blocker is off) and type your web site address in new window that opens( a small one)....then see what licence number is stored next to video player and go back to admin--> plugins-->>ray suite>>>video player...and type your newly generated licence....once you finish, if everything is ok ( right licence number) you will see that your site is registered see more next to video player under licences( unity section)...
There is no need to reinstall the whole thing.