The silver card is a protection card that disables the Nemo Card (NFC type) scan before opening Nemo Album package. When the silver card and Nemo Card are stuck together, you cannot scan Nemo Card on your smartphone.
If you want to scan Nemo Card and activate it on your account, you have to separate those two cards and scan the Nemo Card on Nemoz App. Do not try scanning the silver card or two cards together!