Why won’t the blue light stay on? And why won’t it connect to my phone

So when I plug in my photive hydra the red lights come on meaning it’s plugged in. But before after a few mins when I turn it on the blue light also turns on and connects to my phone. But after the aux plug came off it won’t connect anymore and blue light won’t come on unless you hold down pairing button. The light is just still blue and does not blink. What is wrong with this?