I think I found the 2. Look at the 7 again and slightly to the right of it. The background dots are colored slightly darker brown compared to the rest of the background. Trying to focus on these brown dots instead of the green 7, you can make out the slightly shifted 2.
Didn’t see it until many people here referred to a 2.
I just learned you can create an account to track this! I am always a bit sad to see my progress being lost on cookie refreshes or whatever happens. Will change this as soon as possible. Thanks for highlighting that!