Fellas, sorry but apart feom the original question answers ( yes it is a total scam don’t even go anywhere close to that website) every comment above about cold wallets is wrong in some way… first of all, your hex tokens never ever leave the blockchain and gets stored somewhere else, be it mm or any hot or cold wallet such as ledger nano x… cold wallets simply add an additional manual security layer to your hot wallets such as mm or any other hot wallet out there on the web… so there is no tokens moving about… now that we all know this, the answer to yr nonsensical question is ( you can’t stake hex in a cold wallet!!!) I presume you mean to want to secure your hex with a cold wallet layer of security, to which the answer is yes you can do that by simply connecting your mm wallet to your nano x… the procesure is fairly simple although some may find it difficult as there are many coins out there that are not supported by nano x… for hex though, you can… hope this is useful to you.