Can you click the "!" in the "confidence" to check how many nodes (that they see in average) have accepted your transaction?
It says 156 memory pools have the tx.
As I thought, there're too few nodes that accepted that tx.
My mainnet test "
uncompressed SegWit" transaction has the same behavior (
140~160 mempools) and
I have been re-broadcast~ing it through blockcypher with no avail of being mined (
as I expected).
Still, Good luck!