I had a similar problem with MS 38PS3 built in Oct 2015. This picture is the ODS rear looking forward. There this one long spot and 4 more 12-18 long
The metal came loose from the plywood. My case was the glue to hold rounded metal down was in the wrong place. Staples was to apply pressure to the glue but there was a mis-match of location. I took the RV to the factory for repair. I suppose it took 5 hours to take the rubber roof loose on both sides for inspection and repair and return to normal. Only one side needed repair.
I had had talked an independent mobile repairman who specialized in rubber roofs. His message was as long the rubber is pliable, a person can lift the side, make the repairs and put the rubber back down. Should not be costly. Talk the to the fellows at the factory who do warranty repair. They should be able to Help You and any Repairman