I got some Rinkeby ethers from the Rinkeby faucet, after a minute or so, it showed up in my MetaMask Rinkeby network. But then after a while, my MetaMask shows 0 balance for the Rinkeby network. How did that happen?
Somehow I got some ethers in Ropsten & Kovan network but not on my Rinkeby network. What's going on here?