Yes that’s right. I was able to send messages to the tutor but after the date you mentioned the exact thing happened to me. I think duolingo has blocked the access for us or maybe an update for the hack will do the job for us 😄.
I have faced an issue when using the app. When I make a mistake and duolingo shows me the tip about my mistake I cannot select the answer in that screen and the only button that works is the close button so I need to close that lesson and start all over again from the beginning. I want to mention that the previous hack version didn’t have this problem.
Thanks for your efforts 🙏