You need to set a proper gas price in order to have your transaction sent fast depending on the network congestion...You can check a good value here:
https://ethgasstation.info/
The gas limit is automatically set by MEW
https://ethgasstation.info/
The gas limit is automatically set by MEW
Right. The GAS limit is automatically set by MEW, and I always use this one.
May be it's somehow related to GWEI?
Since I use low GWEI like 4 or 5.
Check https://ethgasstation.info/
For example, now you need to set at least 9 gwei as gas price in order to have a fast transaction...
If your transaction is pending forever you can try to cancel it (basically sending to yourself a transaction with 0 ETH and the same nonce)