Pairing issues iPhone 11 – Halo Sport Review

I had my halo neuro 2 for one month and a half everything was working perfect, but one day just stopped working. Bluetooth headphones are able to pair but not the neuropriming halo 2. I been looking for help but they just send me instructions which I did thousands of times already and nothing seems to help. Does any one have the same issue?
Review by Ana hi on Halo Sport.