pixel_player657713418
I quote fellow player red herring:
„ Diggerius's Code is a long-term quest that will not end until all quests in the Isis quest line are completed.
As long as the main god questlines are still giving you new quests, continue working through them until the last quest is completed in Ancient Labyrinth. Then you will be able to complete the decoding quest.
If quests have stopped in the main god questline you were working on: Check in town (Luxor) and/or the temple of the God you are on now.“
Also see here
https://forum.pixelfederation.com/diggysadventure/d/193320-diggeriuss-code/2