I have developed a small chat application for Android and IOS, but i am having trouble with the IOS side. The developer is unable to make it work and telling me, that the quickblox/cpanel back end is not compatible with IOS. The Android app is working perfect. When the IOS developer started the development on the chat, i started to receive rate limit exceed notifications from quickblox, so i am assuming the app is not done correctly. As i don't have any experience on coding, i can't know what is the problem. If its the back end or IOS code. Would you be able to have a look, if you have experience on back end and quickbblox chat etc.