I can’t say for sure but I could swear that I read somewhere that fondant should not be stored in the refrigerator or be frozen if you intend on using it again
I made a batch of fondant last night for a cake I have to do for Sunday. I’m going to freeze a bit of it as an experiment. Rose says it can be frozen for 2 months. I know professionals refrigerate fondant covered cakes in their low-humidity fridges. The fridges made for home use are not conducive to storing these cakes. Maybe the plain fondant will freeze better b/c unlike cakes there is no extra moisture from buttercream and the cake itself that can be absorbed. Just my two cents worth.