Yes, batches with glycerin and glycerin + propylene glycol and without them are now stored and ripening in my refrigerator, I did not notice a difference in stickiness.You can knead the snus to make it hold together better. Some people do it with a machine but I do it by hand with vinyl gloves and it works.
I can see that some retailers sell gum arabic to make the snus stickier.
Did you add glycerine and/or propylene glycol?
I have one option, I'll show you a photo tomorrow and tell you.