MQEmulator says Merchants of Kaladim is his primary faction but also has ties to
Kazon Stormhammer (-25)
Merchants of Kaladim (-50)
Miners Guild 249 (-25)
Storm Guard (-25)
Miners Guild 628 (+25)
Is it possible you farmed King Kazon for Ring of Scale faction? Thus ruining banker faction in the process?
Not sure if thats the reason, just basing it off open database @
https://mqemulator.net/npc.php?id=67085