PotBS is a completely Free-to-Play (F2P) game. To download PotBS go to: https://play.burningsea.com/
External download should not be needed anymore. The new installer and launcher can be downloaded here https://burningsea.com/download
For issue with the new launcher take a look on the new wiki
You should now have the game fully installed and playable.
If you have any issues, please look through the forums: https://discord.com/invite/burning-sea
Bitraider is NOT used anymore!