Ruckus r510 range improvement for dummies?

We recently purchased a smart home that has a Ruckus r510 AP installed in the ceiling of the front entryway, which is connected to a Ruckus ICX-7150 switch in a media cabinet in the laundry room.  All the smart home features seem to be working pretty well — the only complaint I have is that there are a few “dead spots”, locations in the house  where it seems to take forever to get my smartphone to communicate to the smart home devices through the supporting apps.  I was wondering what options I might have to improve reception/range to try to eliminate these dead spots. I would not consider myself an expert on home Wi-Fi & networking, but I’m a quick study — I’m hoping for a fairly economical solution that would also minimizes the chances of me unintentionally crashing my smart home to a point where I can’t recover with my limited knowledge!