What is causing my laminate flooring to become warped?
I doubt it qas from rhe cleaning unless standing water or harsh chemicals were involved.  Find out what chemicals were used to clean the flooring.  Some (all?) laminate flooring is very susceptible to chemicals and recommend either only water or special cleaner.

IMO, This is most likely a moisture problem.  Check any and all sources of water near the flooring.  Perhaps a leaking dishwasher or sink is allowing moisture under the flooring.  

For perspective, my wife spilled some bubble solution on our laminate and it was cleaned up less than 1 min later but it managed to soak into the seams a bit.  That seam raised up about an 8th of an inch and took nearly 2 weeks before it was completely dry.  As it dried, it slowly retreated back to level with the surrounding flooring.