When I get new boxes of LTF, sometimes they come moderately moist and sometimes they seem a lot more moist (never have I received anything that seemed ridiculously wet) . And, I buy about six boxes a year. They also tend to sometimes come just wrapped in plastic like a brick and placed in the box with no seal at all, and sometimes the plastic has a zip-lock seal. I am not sure if they are just willy-nilly grabbing bags at the factory, or if the zip-lock is new, because before last year I don't remember the bags being sealed at all.
Maybe you just got a wet batch? It's really hard to tell without seeing it for ourselves. We are just grabbing ideas out of our... assumptions.
However, if I received a product that I was familiar with, and it was not up to par, I would call the vendor first. Who knows, they may be aware of something that we forum members could not possibly know.