Electroneum Blockchain Explorer http://pandora.nla.gov.au/external.html?link=https://cryptoexplorerhub.com So, when there is a lot of transactions while in the mempool and you also paid a relatively very low transaction price, your transaction can stay unconfirmed for an extended length of time due to the fact miners/validators will decide on transactions with greater service fees https://wildbookmarks.com/story20479807/blockchain-explorer-solana-new-step-by-step-map-for-explorer-blockchain-solana-https-cutt-ly-3rj9ygbc