Agree with everyone above. Your installation is 'hosed'. Yes, we have had excessively high rain and high humidity this spring and early summer and all wood (or even laminate) product needs to sit in the home for almost a week to get acclimated to the environment. Installers should have tested moisture content, made sure floor (slab) was level ... if not put down a level-set compound, put down a vapor barrier if attempting to glue directly to slab. I agree with Jim L., I also prefer a nail down surface and that means a wood decking set on top of slab then the wood flooring gets installed. You will be in the midst of a finger-pointing session, but stay strong. Manufacturer is correct in that the "rules" of how the product is to be installed should have been followed. Can they provide a list of installers who they consider approved/trained to install their product in the D/FW market? Best wishes to you.