It doesn’t say no about glass cooktops here but I’ve read it on W-S and Staub. This is from W-S: Use
Ideal for use on any cooktop, including induction; not recommended for glass stove tops.
Oven and broiler safe up to 500°F.
For best results use low to medium heat.
When using high heat, bring your pan slowly to a high temperature.
Use plastic, wood or nylon utensils only; metal utensils may damage the enamel.
Enamel may chip or crack if banged against a hard surface.
Handles and knobs can become very hot. Always use pot holder or glove when handling.
Care
Allow pan to cool before hand-washing.
Stubborn stains can be removed by soaking your pot for a few minutes in hot, soapy water.
Completely dry pan before storing.
Avoid using steel wool, steel scouring pads, harsh detergents, bleach or abrasive cleaners.