I have a 2010 odyssey the van shakes when accelerating from about 55 to 65 I

Van is 2010 shakes when accelerating from 50 t 65 I have had it back to dealer changed trans fluid also bal tires they say maybe worn tires but tires in good shape also have had tires to a tire place and they also bal tires , could this be a transmission problem that I read about. Bought this van used 2010 odyssey touring with 98000 miles

I have a 2010 odyssey the van shakes when accelerating from about 55 to 65 I