Hello,
you receive the updates with your email. Inside would be a link to download the new version.
Score is saved only using an SQL-server. Facebook score hosting is depreciated from facebook api 4.0 and above. ( i am looking for ways to activate it again, but for the moment there is nothing. Actually, sql-hosting is far much better for a developer for hosting scores. Much more secure without the facebook server api updates that creates from time to time broken code.)
You only need to have a web-hosting plan. All of them have ftp and sql-database features. You can try free plans on certain hosting-providers to test the game, like 000Webhost, or 5GBFree.
After creating a database in your server, which is a 1 minute thing, Ojyaleaderboard will setup and configure the score mechanism automatically for that database. You only provide the username and password of the database login.
Facebook server, saves the game objects calls the people are sharing, as this is a facebook call.
Once the player get the objects , those can be saved inside the scores database or not. There is a boolean that the developer can activate that option.
And as last, you can post to facebook challenges and celebrations.
The game will be sent to you tomorrow if you buy it, as i made a minimum update.
Tested today with both iOS and Android, using facebook api 6 and 000webhost server and everything works.
Best
Andreas