Blockchain Info Rate Limited https://www.instapaper.com/p/16801185 So, when there is a lot of transactions inside the mempool and you also paid out a comparatively low transaction fee, your transaction can remain unconfirmed for an extended period of time considering the fact that miners/validators will select transactions with larger charges very first. https://bookmarkhard.com/story20716524/blockchain-explorer-website-the-single-best-strategy-to-use-for-blockchain-explorer-solana-https-cutt-ly-3rj9ygbc