When they did mine, they told me that some bubbling was normal after they applied it, and it would go away within a few days as it dried out.
Not sure if that was BS they were feeding me to cover their mistakes, but after a few days it still wasnt gone, so i took it back and they fixed it up no prob.
after i got my tints i had bubbles for about a month, it wa because i got my tints in january when it was like 20 degress outside, it should be atleast 40. after the weather got warmer the bubbles went away. not sure if thats the case for you tho