3 problems

Drinfeld's algebraicity conjecture. This restriction is a quasicompact smooth algebraic stack over $\mathbb Z/p^m\mathbb Z$ with affine diagonal.

Drinfeld's gerbe isomorphism conjecture. These two gerbes are isomorphic.

Drinfeld's extension conjecture. The isomorphism between these restrictions extends to an isomorphism over the whole $\operatorname{Disp}_1^G$.