I have all of the requirements to upgrade my Barris' Invigorating Strike but the upgrade button remains gray. I've restarted both app and phone to no change.
Upon more research and running into the problem again, the issue seems to have actually been that the level requirements were not yet met but it showed otherwise. Her attack ability needed level 38 to unlock and her leader needed 40. ALL mats were had, so it must just not be displaying the level requirement properly.
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