I'm having a different problem recently. Some times the entry is incorrect. For instance, for 別管我, the English entry is Don_APOS_t mind me. Obviously that's a simple fix. Also, in my review quizzes lately, there have been occasions where two choices will both be the right answer. Sometimes I click on them and they're marked wrong, and sometimes they're right. I've checked them very carefully to make sure they're not different, and sure enough they are identical. Just a couple of random issues. I'm loving the site and premium subscription so far!