R&D: Linking Game site store to in-game items?

Hello

Sorry if I’m posting this in the wrong place.

The team and I are doing some preliminary research on a couple key items related to pushing our game. Briefly described below:

  1. Player registers on our website, that registration is used to log into the game as well?
  2. Player purchases a ‘Starter Soldier Kit’ (an example) from our game website store. We want that purchased item to show up in the players mail box or an inventory when the log into the game? (We have a functional inventory. No mail system yet.)
  3. The Player has purchased items from our store, the player goes to their account page and it is showing their purchase history on our website?
  4. Associating subscription with game accessibility? (If a subscription is active, they can log in and play, if not, they can’t.)

Hopefully the concept here is clear. One of our revenue streams is supposed to come from purchase of game items. We can set up an online store. But what we’re stuck on is getting those items transferred into the game. We’re sure there’s solutions out there, any good tips or solutions on where to look and where to start?

Thank you very much for your time and assistance.