Hey, happy to be here, but I’m with the problem!
This was read and done https://support.metamask.io/hc/en-us/articles/360015489251-How-to-Speed-Up-or-Cancel-a-Pending-Transaction it didn’t help me.
Having a 2 years of experience with MetaMask, this is the first my problem, please help 
Can attach screenshots, etherscan link, etc. all the details
Hello,
Have you tried " Cancelling a transaction - Method 2: Custom nonce" from the article you shared?
Sure! But nothing except the error
Hello @user1330 !
Have you tried sending 0 ETH to yourself on the Ethereum Mainnet ? ( If the problem is in this network )
Sure! And I use high manual gas too:
GWEI 100
Priority 1
Gas limit 500000
Here is the error
EDITED:
Screen from etherscan
Do you know some alternate RPC for ETH?
I didn’t try this method yet
Here is some additional info:
When I try to pay with ETH, I have received this error: replacement fee too low
But I uses HIGH gas for sure with manual settings!
You need to set all the parameters based on the current state. For example, you need to choose the priority fee based on the value given on the Etherscan 36 Gwei | Ethereum Gas Tracker | Etherscan
Try to use a higher priority fee as well. First look at the values given on the Etherscan gastracker.
I tried already, it didn’t help, take a look at example upper Transaction pending for 5 days, how to solve the problem? - #5 by user1330
This parameters higher then normal in 2-10 times:
GWEI 100
Priority 1
Gas limit 500000
That means that you need to choose a higher fee. Try at the time the network is less busy.
I see, and it’s done already, tried 2-10 times during these 5 days
Please contact the support team and report the case using the following link.
Click the blue box, “Start a Conversation” in this regard.
https://support.metamask.io/hc/en-us
Wow 
thank you very much
I have just opened the site. Please try again and wait for a few seconds until it loads.
After clicking on the blue box, you will see a live chat box as shown in the attached image.
If you still have issues with the Start a Conversation button loading, this article shares some troubleshooting tips to try:
Wow, that was a very professional conversation with support!
Thank you Linkx!!!
The main thing for those who will get in stuck with the same problem is in:
Use the same nonce!
Send to yourself 0 eth
Use this settings (from top to bottom):
40
30
21000
Voila!
I had the same issue. Thanks
help cancel transactions hung for a long time probyval what is written here does not help, where is the technical support MetaMask ???!!!
0xedfeffa77a9a5c27713a3cf5feb97d4c02b6ad0b07ebe067c8d96bb4302b1039
0xedfeffa77a9a5c27713a3cf5feb97d4c02b6ad0b07ebe067c8d96bb4302b1039
Cancel these transactions please
MetaMask is a self-custodial wallet. No one but you has access to your wallet. Read this entire topic for solutions to your issues. There have been plenty posted, including getting in contact with support.
