Yeah this is doing my head in, been trying a lot of character shift stuff with no luck...
I noticed that there are the same number of letters in "z69JZqlJn862D1ndx7oLVEMmVOlP1zewEeUCrsI7Roahzpeny7P" as there are numbers in the downward column in Wow.jpg (41 characters).
There's 51 characters in the top string.