Hello and welcome to COL
As bizzylizzy has said, there could be many things that can cause bloating, I found mine had problems with kibble and the new fresh pressed food, (of which it is said it dissolves in the stomach and does not swell up like some kibbles, making it gentler on the stomach.
I feed both mine cooked wet food, which may be an option to look at if kibble/cold pressed is the culprit.