User blog comment:Chocolatekoala96/Free one week membership?/@comment-34193805-20181101215615

AJ has been doing this for a couple of months now I believe (around September or even longer idk). anyway basically they give out free membership to any nonmember player, nothing to be freaked out about.

pretty sure it happens randomly, my spare got one too and I don't think it's because you referred a friend just a kind gesture