I never received League of Regrettable Superheroes either! I emailed them (which worked for a previous incident), but apparently they have a lot of turnover....
My first one came before that, my second one probably took about that long, and the third never showed up. About that time, I heard from others that they weren't getting their books from the Quirk giveaways, either.
I think the turnover thing is a big issue at Quirk recently. Since my last incident of not receiving a giveaway book from them, I have been relayed between four different people, each of which replied with "I'm no longer with Quirk, here's so-and-so's info." I'm not sure if they even know who is in charge of the mailing stuff now....
So I'm not sure I will get this...