Put them back on the drying rack for another 7-10 days.
They do go crispy at first, and even crumbly, the stems snap, but this isnt ready yet. This is just a stage. They will go past that and after bout 7-10 more days will firm up with a slight bounce to them when squeezed. The small stems on the buds can even go back to bending a little bit before snapping sometimes. The smell will come back and your fingers will be sticky after you've squeezed a bud.
Back on the rack they go.
(Short answer, yes drying time was probably too short at 10 days, this time).