Facebook Messenger isn’t working properly on Apple Watch series 4

Hello all, I recently purchased an Apple Watch series 4 and I am based in Athens Greece. Now I installed Facebook Messenger and I face some unusual problems. First of all I can’t see the profile pictures next to each conversation like it’s shown on the App Store. Also I don’t have all the reply options as well as I am not able to send voice messages or even listen to the ones someone has sent me ( it says attachment unavailable ). I have tried many things like uninstalling it from my Apple Watch and from my iPhone etc.

Here are some screenshots from how it should look like based on the App Store and how it looks like on my Apple Watch.

Thank you all a lot in advance.