You’re better off asking follow up questions to the mouth of the horse tbh. But I’ll give it a shot:
You can have multiple Wow accounts under the same battlenet. You can recruit accounts under the same btag apparently: Raf self using another account but on same bnet? - #4 by Vrakthris
Here is the eligibility criteria: https://us.battle.net/support/en/article/000046861
To recruit a friend, your friend’s WoW account must match one of the below descriptions:
- Your friend’s account is new, created in the last 7 days.
- Your friend hasn’t had paid game time for over 24 months. If your friend has returned and had paid game time in the last 7 days, they are still eligible to accept your invite.
I hope that helps. I’d really ask customer service for any more clarity, they can see eligibility and timelines etc.