Overpromise, underdelivery.
Virtually every major function was broken at least once for me. Poor featerset, annoying and dumb ui. One of those app like skype before - you keep it only because of your grandma and few other important contacts who don’t know any better.
It is much worse than for instance pigeon mail. Because your expectations from pigeon mail more or less align with reality. And you expect from a 21st century software some basic things like cross device synchronization or at least reliable messsge and status drlivery, but it fails you, sonetimes in most important moments of your life.
The only feature they implemented well is video calls. It feels like it was implemented by some other (10x better) team than the rest of the app.