In a recent patch favor gain was re-balanced. The stated intention was that early game every god should (on average) give roughly 500 Favor per visit to the Realm (not counting the Realm Quest, which is an additional 250 Favor).
However, it seems that Vertraag, God of Time is never capable of giving 500 favor in a single visit.
That is, Vertraag seems to give Favor only for:
– Find all three Orbs
– Defeat the Sun Sphere encounter
Consider adding an additonal source of early-game Favor for Vertraag. (For example, perhaps entering the Rifts and defeating those encounters should give a small amount of Favor.)