Sounds like too much weight is pulling it loose at the top front of the cargo bay compartment (if its plastic like mine). Look up at the very top. Mine has a 90 degree ledge that laps over the flooring, holding it in place and giving it downward strength. This may have pulled loose (staples rusted) and the overlap "lip" is pulling loose, causing the front of the bay to dip down. Or, no screws or staples were placed in the top of that horizontal lip to begin with.
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia