Personally I don't find it very useful because I don't use Coinfy, but I would try their service just to use my voucher... if possible.
Are you sure you would like to make a full KYC for a voucher worth $15 or $25?
Do I need to do a KYC?
Yes, you need to do a KYC with our partner Coinify. Due to regulation, KYC is mandatory to buy crypto.
Hardware wallets are easy to setup and use, and a newbie hardly would make a mistake using a hardware wallet.
I wouldn’t agree that a hardware wallet is the ultimate protection or as some would say bulletproof - you have hundreds of examples where users of such devices have lost their coins, either due to carelessness with backup or because they type their seed words in various fake wallets. If you don't know how to use something, it doesn't matter if it's a desktop/mobile or the best hardware wallet.