Just a heads up that TH will randomly change your RAF link on you and not notify you. I hadn’t received any free months in a while (I usually get at least one referral a month) and finally looked into it today. The number in the RAF link was different! Thought I’d put this out there to warn others.
I don’t know who got the free months when someone used my out-of-date link (probably no one, which works to TH’s advantage, I guess).