The great thing about Phoenix is they can usually complete events well before other groups can. They do well to hit above their power level due to their synergies and health/protection regen. You should be able to get the mods done as soon as your Phoenix are all 5* without much trouble, especially if you're keeping their uniques levelled up (which you should be doing anyway).
well, according to your swgoh.gg page, you only have Hera at 4*. If you were trying to do the 5* challenge without her, then I'm not surprised that you didnt have much luck. She's the glue that makes Nix work.
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I agree. I got it 3* pretty much right after I had them all at 5*.
Ginding a decent guild as a new player is frustrating. The one I am in is very nice people, and it seems to be growing slowly.