I did it like in the tutorial with my blockchain wallet. Idk wich wallet that is you found.
But i try it again:
-----BEGIN BITCOIN SIGNED MESSAGE-----
This is realchlorum from Bitcointalk
Today is 18.12.15 16:02@Germany
-----BEGIN SIGNATURE-----
1NzJ8z45c9e5BhArQ4z7Y3fyAjoUDiiXvV
IFaSMpyj0sNEc9IzNDxoudXkdzrfw+Ah7i0cfNZYh15lHu/AXM42Pg33FZwQ0YBFexor+Tn+8VTbSs1Kc489Obg=
-----END BITCOIN SIGNED MESSAGE-----
I can also send you the picture of it if you want.
Pic:
message not verified. Have a look at below snapshot.
Hm okay im sorry for that. Idk what i can do.
I will try to find the login key for my old wallet so we can try that one then.