Beyond all that, in Panel 8 Serini is wrong to blame the Paladins and the Order for four blown chances.
They had three blown chances:
Elan and Dorukan's gage
Azure City's gate
Roy and Girard's gate.
The Paladins + The Order combined had three chances. (In baseball terms, three blown saves).
The first chance to protect gates had nothing to do with the order, and nothing to do with the Paladins but it had to do with Serini's old comrade Lirian and a certain pyromaniac goblin.
Spoiler: SoD material
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(SoD and Lirian and Dorukan and how the ents holding the gate together caught fire ... )