Recently we found an issue with alexa rank checker of seo panel version <= 3.1.0
Please do following steps to fix this issue.
1) Download patch file from following location => http://www.seopanel.in/patch/patch310.zip
2) Unzip patch file.
3) Replace file
“seopanel/controllers/rank.ctrl.php”
with patch file
“patch310/rank.ctrl.php”
This will fix the issue with alexa rank checker.