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). So I've been shifting the letters up/down by the corresponding number in the downward column, as per "0=0 A=10 BABYA=36".
eg, the first one I tried was a downshift (the final countdown?), so "z" shifts down 2 characters and becomes "1", J shifts down 7 chars and becomes "Q" etc:
z69JZqlJn862D1ndx7oLVEMmVOlP1zewEeUCrsI7Roahzpeny7P (original)
z--JZqlJn---D-ndx-oLVEMmVOlP-zewEeUCrSI-Roahzpeny-P (characters 0-9 removed)
2--791357---9-135-7913579135-7913579135-791357902-4 (corresponding numbers in downward column)
169QiroOu862M1og27vuWHRtePoU17nxHjbLsVN7Yxbk3wnn17T (letters shifted downwards by corresponding number, original characters 0-9 replaced)
I couldn't get anywhere with this, tried various hashing and private key generation tools. I might be barking up the wrong tree here, but I like how this approach incorporates all 3 clues (the 0=0/A=10/a=36 code, plus the header and the column from Wow.jpg).