What's even your problem? Validate a bnet account and then validate a wc3connect account. Then go to the stats transfer page to complete a transfer. What can't you verify? Your bnet account? Your wc3connect account? What accounts do you have verified? What accounts do you want stats transferred between?
When i wanna validate my Wc3 connect account or my bnet account it says that i cant verify it, cause it has already been verified for paschy90. I didnt verify it though for paschy90 and i dont use that account. I only play on Legion90. I got a battle net account names Legion90 and a wc3 connect account named legion90. So i only want to have my stats on my wc3 connect account so i can play there since i only play +1200 legion.