why many users here say blockchain.info poorly coded systems
blockchain.info suppot two coins , high security and low fee
1.Because keeping your private keys on the internet is always insecure,kinda dissolves the purpose of calling them private keys.
2.If their servers go down,you really have no back-up or access to your coins if you had not backed them up.
3.The transaction fees are really high by default at blockchain.info.
4.You have better options like electrum.