Why can't you play pass province 18 on season 3? : r/EmpiresAndPuzzles
Barry Farmz Here -- Comprehensive data driven farming guide for Season 3, Season 2, Season 1, Elemental Chests, Atlantis Rises, Missions, and more - Player Guides - Empires & Puzzles Community Forum
Empires and Puzzles Ultimate farming guide - Updated March 2020
Season 3 Farming map from Facebook thread : r/EmpiresAndPuzzles
For those that are looking to unlock avatars from season 2,3 & 4… : r/EmpiresAndPuzzles