Do you mean, you bought the correct scale, but the PWV measurements never worked? I assume this is the case. Would you like to share the details, because that point is interesting to keep in mind also for other readers. if you don't want to share your experience here on Medium, you may contact me directly via my e-mail or via the contact form on my website (https://www.adiphea.com/en/solutions/contact/)

I'm especially interested to know your body height and weight, and any conditions you can think of that might have affected your results.