The problem is the instructions are super unclear - it asks you to enter the letters in the image, but if you are going from a strict perspective there are no letters in the image, only numbers (and a plus/+ character). Even if you go from a less strict perspective, the answer would be something like
13+19, but that isn't the actual answer (and neither is
1319or a bunch of other combinations of things that I tried, including enter nothing since there are no letters in the image).
The correct answer requires you to add the two numbers together. The instructions should indicate that is what you are suppose to do. I get that the website wants to avoid bots signing up but I got locked out from signing up because I couldn't figure out what I was suppose to enter (and I thought maybe I was just entering the wrong letters/numbers too so I wasn't even making progress on what I actually should be answering). I had to open an incognito window so that I could keep trying...
Thanks for reading.