3 days have passed and it's impossible to enter the app. I bought a vivosmart 4 and I can't even change the settings. Do you have any info, please? If this continues during weekend, I am going to ask for a refund. It does not do what is seen in the commercials.
Do you have any info, please?
This is a user forum, and we do not have any info about your phone, and also cannot refund you. Though you can send me your watch if you do not want it anymore 
If you have a problem with the app. Did you already try reinstalling it? What phone brand and model you use, with what Andorid version? Where and when exactly are you getting that error? The 3 days passed since when? Without giving any details it is hard to advise you.
