Block Explorer Reviews https://www.instapaper.com/p/16801288 So, when there is numerous transactions while in the mempool so you paid out a comparatively small transaction rate, your transaction can keep on being unconfirmed for an prolonged time frame because miners/validators will select transactions with better charges first. These transactions stay in the mempool https://socialmediainuk.com/story25179584/ethereum-blockchain-explorer-tron-blockchain-explorer-for-dummies-https-cutt-ly-3rj9ygbc