Hello MANPREETSNEHRA!
If you started the game on plarium.com portal, it is not possible to transfer your game account to your mobile device or facebook.com website. Plarium.com website does not support the functionality of synchronization for transferring the game process. However, please note that you can use the linking to social networking services on the portal for your convenience when logging into the game. Stay tuned and follow our updates. You can find all information about our updates in the News and Events section (https://plarium.com/forum/en/vikings-war-of-clans/news-and-events/). Stay tuned and you won't miss anything!