ArrowChat

I ‘m using Arrowchat for a while. Last week I found out the chat is not functioning like it should be.

Users don’t get a notification when he receives a text message in Arrowchat.

Even when two users are “chatting” with each other in a private chat, the messages don’t show up.
You have to resfresh the page to see what the other person has sent you. Is anyone familiar with this problem?