Just fair warning to all interested, optifine capes are registered to an email that can recover the account and change the username again, please use caution and I'd also recommend using proof that they are in fact in your full possession, go to optifine net / login and hit request password, then enter your donation email and you will get a password go back and login and you will have all the capes registered to that email show up, that is good evidence of possession and also check your spam folder just in case