Some of you absolutely loves expeditions and completed the new Rescue Expedition in less than 20 days😎 but at the same time you see 98% completion and the expedition itself does not close. Why is that?

As you probably noticed, this Rescue Expedition is the first Expedition that has the Pass came with it. Since the Pass always lasts 21 days, the Expedition cannot be completed until the Pass timer expires, because if the island closes, you will not be able to complete the tasks in the Pass to get the reward.