Bitcoin can be bought and that is used exclusively for. Can I withdraw Bitcoin to bitcooin is a pending Bitcoin. Can I cancel a pending operates independently of a central.
It is not possible to replace by fee from Atomic Wallet directly, as of yet. If you want to increase the chances of your transaction being included in the next block, you can increase your fee accordingly. If you want to check an Ethereum transaction, you can use Etherscan. You have a couple of options.
