I know it's some kind of encoding that can be turned into a phone # and/or email address, but what encoding is it? (By the way, I'm not going to apply for it. You're not helping me cheat or anything. I'm just curious.)
Never seen that before.
Respond with the solution and they'll talk to you. It's not nearly as hard as it might look. I'm no cryptographer or math whiz, but it took me just a minute to solve part 1.
Breaking the code  gives you an instruction. Follow the instruction  and send the result.
Seriously, it's easier than you think (at least, part 1 is).