I have to modify my evaluation. The app is still amazing and gives the opportunity to improve languages but it has lots of issues. Sometimes it's impossible to listen to audio messages and very often it doesn't send your messages. The most strange thing is that I can see previews of messages on notifications but they don't appear in the chats. And it's impossible to have a conversation with your language partners. I notice that many of my partners have the same issues. Please could you check?