I think currently the Rinkeby Authentication Faucet is not working. It shows error insufficient funds. I also posted on twitter. Upon reading the same questions here people are asking for whales to donate some test eth so I am also asking for help. I just started learning solidity and so I need some eth to test my contract. Below is my eth wallet address.
0x7689338a7BF7553cb32eb6A9284347c55efB4dDf
Thanks