We got the payout processed, and an e-mail response as well... so everything's OK now.
I freaked out a bit because I feared some info got lost or we'd have to resubmit our tax interview, but thankfully that wasn't the case.
If I had to guess I'd wager the staff who handles these payouts is just super busy, especially with summer around the corner.
Our team's revenue share is set to 15%. But thanks for the advice, we'll keep it at that value and no lower. Honestly, dealing with individual payouts and PayPal is such a major hassle and pain in the ass. Itch providing the service and handling all that is a godsend, it's well worth the 15% split.