You have not pushed the flour canister in all the way. Be sure that the “Yes” is showing before turning your mill on.

L’Chef, LLC warrants the NutriMill Classic grain mill with a limited lifetime warranty to be free of manufacturing defects in materials and workmanship. Defective products will be repaired or replaced with a comparable model at our sole discretion upon receiving the defective product.

No. Oil in nuts, seeds, and herbs will turn into a paste like substance which will clog your machine and void the warranty.