I have same problems before, and never find any cancel transaction from Metamask wallet. So the only way to do just sent 0 balance in same nonce number from Metamask with higher fees. But this is not to cancel just to makes your previous transaction being confirmed.
Here my thread when i got similar Issue.
https://bitcointalk.org/index.php?topic=5184484.msg52451444#msg52451444Thank Sir, I did fix this, I trying nonce = nonce pending lower
p/s: I'm so sorry, My english verybad.
So the problem is solved @dinhvinhson? If so then you have already got the answer and maybe you have not nothing to no more about this issue. Now you should lock this topic. To lock the topic go the bottom left of this thread and you will find lock button and use it. Good luck
p/s: I'm so sorry, My english verybad.
No problem. we are many people here where English is secondary language.