Unable to shapeshift from 1 form 1 other

Log in to wow today after spending time with the family all day for Christmas and I when to play my druid and was killing a few mobs and when I was done I was unable to shapeshift from the cat form to the travel form the only way I can get in to travel form is when I leave cat or bear form, I have made sure all addon’s are off to so if any one would know what this problem would be I would love to know.