YOU CAN MAIL A CHECK, DO AN eCHECK, USE A CREDIT CARD OR PAYPAL. THATS YOUR ONLY OPTION.
I bought my key with a credit card and I got it in half a second by email.
You're dad is technophobic, and he needs to understand that Blockland is a SECURE WEBSITE. Thousands of people have bought Blockland and got their key, and didn't get scammed.