Can composition gst tin holder sales his consumer products through e-commerce operator

My Clients is an GST Composition shop manufacturer of Cake and pastries, selling cakes through  counter cash and also through e-commerce operator Swiggy, Zomato, Foodpanda etc.     Since most of shop consumer products i.e. cakes are sales through e-commerce, whether my clients can contiune business as Composition dealer OR he have to opt for Regular GST holder.    (As e-commerce operator have to register as Regular GST holder and can't opt  for composition)

Valuable Reply appreciated.

Thanks in advance.