Reliable Floor Covering

We had to replace plywood underlayment next to a sliding door due to rotAt the time of installation the prep was perfect and there were no issuesHowever, the sun beats down on this area and we believe has caused the plywood to shrink or shift and is now slightly visible when the light hits the area just rightWe are requesting an independent inspector or arbitrator to look at the floorThe [redacted] have been great customers of Reliable Floor Covering for many years and we sold them a commercial floor we felt would be the best for their home