"Am wn i"
No problem, really. I did not know that the questions were randomized. That, of course, explains why this happens from time to time. I was using my phone and this, the first question in the lesson, did not have hints. There were hints under the subsequent questions, though sometimes in the past I have had whole lessons without hints. I had thought it was a choice of the designers, but now I realize it is just my phone. Such things never occur on my computer.
At the top of this page, the Welsh sentence Am wn i has a dotted line underneath the words.
When I move the mouse over a word and let it rest over the word (without clicking), a little window pops up with some meanings for that word, sometimes also for that word in combination with other words near it. Those are the hints.