Most things are delayed. Depending on the changes you've made can take 2 - 4 weeks to see a bump. When did you complete everything - the G+ L and the site SEO?
Did you change NAP at all? That can really upset the applecart as I warn in training.
Additionally even if you do everything right, if the client has an organic penalty or a lingering G+ L penalty, or something is out of whack and you missed it, even the best optimization won't make a difference.
Then too there is Pigeon and good sites got buried, while spam rose to the top.
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