The person I checked which has problems and no WW indeed has an Unleashed Unit Upgrade building.it could be other expirable buildings, ppl used them last tourny and that is a new thing from last week (polishing expirable buildings)
Guess they forgot about the Notifications that comes with it.
Amy, not only the Wishing Well, other expirable buildings like Unleashed Unit Upgrade also cause same effect.Thanks folks! And apologies for the delay investigating this issue. Confirmed (it is indeed the Wishing Well polish that's the cause)