Blockchain Explorer Check Transaction https://www.demilked.com/author/crawford18sheehan/ So, when there is a lot of transactions within the mempool and also you compensated a relatively reduced transaction fee, your transaction can keep on being unconfirmed for an extended time period since miners/validators will select transactions with better charges first. It is quite basic https://allyourbookmarks.com/story20315968/blockchain-explorer-transaction-id-explorer-blockchain-tron-options-https-cutt-ly-3rj9ygbc