So i made a new AB account a little while back and never set up the pin code because i just signed up to show my friend the prices on some things.. I sent some BTC to my deposit address and am prompted for a pin code..but i never set it up.
Im only allowed to reset or change it. However, if i want to reset it, i need the mnemoic seed but i didn't even write it down
Yeah, you're pretty fucked. There is a reason why it tells you multiple times to write down your mnemonic code.