Atlantis coins and summon

Im playing 2nd season and I can’t gain more Atlantis coins. Also we cant summon new atlantis heroes.

The Atlantis summons is a limited time event approx every month it will appear.
As for Atlantis coins once you have completed season2 all 3 areas on both normal and hard. Then the only way is as rewards for titans or chests etc. This is u TIL the next stage of the map opens up