Opinions on SneakPeek?

My boyfriend and I were talking about ordering a kit to find out the gender early if my doctor isn’t able to do it at my appointment (10 weeks)

Has anyone used this? How reliable is it? I know if any male dna gets in it then it will give incorrect results so he won’t be anywhere near me while I do it.

Let me know your experience with this kit! Is it worth it? We are only going to order it if I can’t get the gender blood test at my 10 week appointment, so with the kit I would find out my results right around the 12 week mark