Terrible update completely broken app

Awful update. For almost 2 full weeks now the app completely doesnt work on iPhones. The company obviously spent no time testing this. Its cost my business money. What a completely terrible update, they should be embarrassed with the mistake, even more embarrassed that its taken this long and not yet fixed, and even more embarrassed that this isnt the first update they have done that has broken this app. Useless!

Frozenbruin about Vonage Business Communications, v3.1.1