Hello! I became a member in December (ha it rhymes!) and I cleaned up my quests... somehow at some point I lost my quest line! I'm in Monquista doing side quests but I need my main quest line back :( I already did the part where you fight with Gortez on your side to free some monkeys, but I don't remember what happened next... I stopped playing for a few weeks and I don't know what to do. I think it was like this before i stopped for a while.
I'm not sure if this will help or not, but every time I complete a side quest the quest helper automatically goes to the main story line quest. But from what you described I think your next quest should be taking you to saint Bonobo's abby.