Customer Service has received requests for assistance with the Invader
Insignia Tome unlock issue that has impacted some of you. Though we
implemented a solution yesterday, we have implemented another this
afternoon. With this new change, players who possess the original
weapon but could not equip it, are now able to resolve the issue on
their own. To accomplish this, simply open a buy window with any
merchant that has a buy back tab, sell the weapon, select the buy back
tab on the merchant window, and then buy back the weapon.

(please read on for more important details…)