Current version buggy

I was really happy with the app until the current update. It is now skipping every other exercise within the lesson. Once you finish with the exercise you have to go back in to do the exercises that were missed. This doesnt make sense. Previously I could complete an exercise in one sitting. Furthermore, if I try to do more than one exercise in a sitting, the app starts to get buggy. The longer I go, the likelihood of it crashing increases. I have to close the app, re-open, and re-login. This only fixes it for the next one or two lessons. Anything longer and it crashes again.
Re-installing the app doesnt fix it either. It makes the app a less worthwhile option than the desktop version. Then again, Im not sitting in front of my desktop for long periods of time. I used to like the app since I could squeeze in a lesson wherever I was. But now, that is near difficult since it gets impossible to use after only one lesson.

Usermgname about Rosetta Stone: Learn Languages, v3.6.0