Jack O'Connell is the defender they're missing iirc. They're creating chances but not taking They've had a lot of close games, and we're the only team to pummel them.
This ^ I said last season they were the best organised side I’d seen at Goodison in years. They created next to nothing, but they were incredibly solid and well drilled. The loss of O’Connell seems to be key, as they’re conceding goals now, even from set pieces.