Love it but has some new bugs

I love this app, but there is currently a glitch that will not allow me to progress in any lessons. If I try to do a practice lesson, it gets stuck grading after about the second question and I have to close the app out. And after doing a different lesson, it didnt count it as finished and wouldnt let me go past what I had just done. Please fix so I can continue!

LinleyM. about Duolingo Learn Many Languages for Free, v5.0.15