App says it is watering, but water isn’t coming out

Next would be to double check the wiring at the controller (all pushed in) and at the valves (common wire didn’t come loose out of a wire nut or electrical tape etc). Also manually activate zones at the bleed valves to verify water supply. If all looks good electrically and mechanically, the odds get higher that there’s something amiss with the controller & opening a support ticket becomes necessary.