RotDS v2.9.8 download

Good news, you won't have to start over! If you didn't get the oil during Ronan's scenario, that just means you'll have to go all the way back to that town and get it - you need to go back through the cave, then over the mountain, take the raft again at the Crimson Blades' hideout, then it will drop you off next the the orphanage, go up/left and cross the bridge that will be rebuilt, and go to Kaldor Trade City and find the NPC to buy the oil from. Then take the ship back to Seascape Town and head back to the castle! It's a very tedious 'side quest', or rather slap on the wrist for not talking to all the NPCs

That Jade Skull Relic that prevents all monster encounters, Olbohn took it sadly, that's the joke is that he took off with arguably the most valuable Relic after the battle, which leaves the player feeling cheated and tilted lol. No sir, the only way to get the Jade Skull is a much more challenging and tedious method in the WoR.

About notifications, I'd bet there is, I should know...but I don't offhand. I'd imagine there's some setting in the user setting to receive notification by email on a new response, but I've never checked tbh.