So I’ve been using memrise for about a year and a half now, and just a week or so ago, I encountered this bug. I’ve been nailing the terms for a section, yet memrise decided that they were difficult for me. Now I’ve got hundreds of “difficult” words that I’ve been getting right for the past week without them returning to normal. It went from about 100 review terms a day to over 200 in a day. I don’t have the pro version so I just use the standard review, but these terms just keep coming back. It may be a limitation to how many days it can add to a correct term after you get it right, and when you get it right too many times, this just happens. That’s just my theory though. Anyone else getting this bug?