Instinct 2 surf edition not accurate at all

Hi, 
I bought a garmin instinct 2 surf edition and i :have two big problems:


1) Wave count is completly off, so totaly useless

2) tyde information is off , by almost 1.3m on my homespot so totaly useless too .....

what a shame for a surf watch ! this two thing are the only one a surfer could need and those are defently not working ......