Incorrect Measurementsu

I bought a Venu SQ2 for Crossfit and most of the measurements are completeky incorrect!! For example, after a 60mins training it shows that i burnt only 115 caloris, that my intensive time was only 2mins, that i walked 5000 steps, my max. heart rate is 98 and so on.. I"m looking to solve the problem before i claim my money back!!