@not.you: that link you posted gave the exact same message like I showed above. Do you not see it? Is it just me?
I think we posted right about the same time so I missed your quote but the point is that it is doing exactly what it is supposed to. As I said, monero doesn't work like that. You
cannot check the balance in the block explorer.
Also you do not need to create an account on mymonero.com, you would just login using one of the options (if you can, meaning if you have the info it is asking for).