Strange, am I the only newbie that started her crypto journey using paper wallet? The first wallets I created for BTC and LTC are paper wallets, later when I decided to move into altcoins I still went for altcoins that uses paper wallet, Electroneum was on of those altcoin back then, I just find paper wallet to be easier to use.
How did you created those paper wallets? I doubt you created them properly.
A paper wallet should be generated on an airgapped device and the key should never connect to the internet. Is this how you generated your paper wallets?
There are many newbies who generate a private key and (wrongly) think that they have created a safe paper wallet.