Coupon question

I’m not a couponing expert I just tend to glance at store offers if I think about going soon and I came across this Foods-Co coupon on soda and it says “when you buy ONE (1)” of whatever soda is listed and then the next line says “Use up to 5 time in a single transaction.”

So can I or can I NOT buy more than one case of soda and use the coupon on all them cases? I don’t understand how I’d use it up to 5 times if it says “buy one.”