That’s weird 🤔 nostr:npub137c5pd8gmhhe0njtsgwjgunc5xjr2vmzvglkgqs5sjeh972gqqxqjak37w have you had this before ? Or maybe cause it’s been already for 2 weeks in mempool ? 
Discussion
It is possible for a transaction to “fall out” of the mempool you submitted it to. Another great reason to run your own validation node!
I can see it pending in mempool
Which mempool? There is no single mempool.
? its not an exclusion, that your own validation node may "forget" his own txid! running your own node is no guarantee for always being able to bumpfee.
Yes, happened to me, got this message for a ~5 days old transaction.
The txid is still visible on mempool.space
Maybe the fee was too low (18sats/vB) and it has been pruned in the ViaBTC mempool, idk.
Later I created another txid with the same fee, it has been accepted by the accelerator but in the end has not been processed. This second txid was never been visible on mempool.space, if I try to rebroadcast, it says that the RBF fee is too low.
I have, so I used https://bitaccelerate.com/ to rebroadcast. Sometimes even that didn’t work though. You basically need to get your TX back into the pool somehow 🐶🐾🫡