Hi James24,
It’s unfortunate that you didn’t find us before buying your mattress.
The Enso mattresses generally use lower quality/density memory foams in the comfort layers which can soften and break down more quickly than higher quality/density memory foam so if the mattress you tested was fairly old then it could be significantly different from the mattress you received.
There are also other factors that can affect the firmness/softness of a memory foam mattress … especially when it’s new … and post #2 here also has some suggestions that may be helpful.
Phoenix