You might have figured it out by now but gonna leave this here for posteriority.
Collisions for the minimal solver must be VDBs. The SDF should be named `collisionsdf` and velocities `v`.
also you need to inform the solver about how long the collision should be, under the solver, setup tab update the collision frame range to match your animation.
This should be all to make it work
Also, make sure your sourcing has the correct source frame ranger and cycle length. Both options can be found under the Sourcing tab.