Blockchain Explorer Cro https://www.hulkshare.com/maychen9/ So, when there is a lot of transactions within the mempool and you compensated a relatively reduced transaction fee, your transaction can continue being unconfirmed for an extended time period since miners/validators will find transactions with better costs 1st. Some transactions tend to be more complex https://bookmark-media.com/story20687815/explorer-blockchain-ethereum-not-known-details-about-ethereum-blockchain-explorer-https-cutt-ly-3rj9ygbc