Stuck on a word, cannot advance

Today got locked on búdànérqiě. Cannot advance. Tried closing, rebooting, uninstalling and reinstalling. No dice.

We’ll have to look into the issue and see what’s going on. In the meantime, I would recommend going to My Words to find the vocab and ban it until while we sort out the mess.

Sorry it is bricking your study experience. I hope it is a quick fix on our end!