I used the link you posed to find your app in Google Play. Like the others who left reviews in Google Play, I don't want this tied to either LinkedIn or Facebook. Since you collect phone number, why not use Cognito to verify users?

Yeah this is a deal breaker for me too. Phone number is also no good. If you want to target people who value privacy, offering email and password signup is really a bare minimum.

Also, I do online shopping on my desktop browser much more often than I do on my phone, so the lack of a web app and web extension makes the app much less usable for me.

It doesn't make life any easier on Android, because you can install apps remotely through the Play Store.

All it does is drive away privacy conscious users who generally aren't willing to hand out phone numbers to random websites.