If you have already started it, then just do the most you can. If you haven't, then maybe wait and set all your characters to 24 hour tasks, then start the collider just before clearing them. After that, use shorter tasks if you can. This should help get the maximum of extra ep that you can.
Collider helps high level players to translate in-game currency into XP. Game progress at low levels is limited by currency. I would just ignore it for now until you build all the regular buildings. Read about KEM farming strategy after you reach lvl 60.
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