I haven't recorded this (Discovered on PC) but when you don't have the second blank voucher unlocked if you get an a voucher in the store you could purchase it let's say it's your 4th purchased blank if you head to main menu you still have 4 purchased blanks (2nd blank voucher requires 10 purchased blanks) and when you press play and continue the previous game the blank voucher appears in the shop again and you can purchase it again and go up to 5 purchased blanks and if you head to main menu again and press play again and continue the previous run the blank is back in the store and you can purchase it again to go up to 6 purchased blanks and repeat this 10 times to unlock the 2nd blank voucher (the +1 joker one) I just discovered this accidentally and unlocked the 2nd blank voucher this way I'm not really sure if I did a great job explaining the glitch but basically get an account without the 2nd blank voucher unlocked in collection find a blank in the store purchase it head to main menu press play and continue then purchase blank again from the same store and repeat this till you unlock the 2nd blank voucher. this glitch is just can only be used by new players to unlock 2nd blank voucher faster