Went on a bug hunt today (no pun intended) and fixed a few glitches on the product pages, including the attribute pricing for W3 thru W16. If you experience something weird, please report here. I will monitor this thread extensively today.
Very likely PayPal. We do not really reject any payment methods (eg PP+CC balance), neither via PayPal nor via Credit Card. Did you order at the old V2-store using pp plus cc balance?