Pre-wash and vacuum seal fresh linens/towels in labeled storage bags, then store them in a sealed plastic bin with moisture absorbers.

Hi @Stan TallmanHere are the most logical causesHydrostatic Pressure (Groundwater Seepage) - During or after heavy rain, water in the soil builds up pressure and forces its way up through weak points in the foundation.Slab Foundation Leak or Plumbing Issue - Even though you're on city sewer, it’s still possible for a drain or sewer line under the slab to be cracked or compromised.Improper Grading or Drainage - If water is pooling near the foundation and the grading isn't directing it away, it may seep under the slab.Improper Vapor Barrier or Slab Pour - If the vapor barrier under the slab was poorly installed—or skipped altogether—moisture will push upward over time.

Are there gaps, cracked wood, openings that are allowing wind and moisture to come into the house? 

It sounds a bit unreasonable, especially since they didn't give you a chance to rectify the situation.I will say that A/C does more than cool the room but also helps remove the moisture in the house.

Use high-quality, mold- and mildew-resistant paint with a moisture-blocking primer so it lasts longer4️⃣ Upgrade Showerhead and Faucet:Old fixtures can leak and lead to tenant complaints.

The only moisture issues were (1) when the AC was kept on 24/7 causing the handler coil to freeze over, the freeze melting  dripped down into the filter and onto the floor inside the AC compartment. 

The first thing is to get rid of the moisture.

The mitigation company has removed all moisture and have also taken care of the damaged parts of the house. 

Unlike carpet, LVP does not trap odors, allergens, or moisture, and it is easier to maintain. 

I assume your inspector has inspected other beachfront condos since he purposely brought the moisture tester.