problems with the integration of WordPress with WHMCS

Good night, instalaei the integration of WHMCS for WordPress, as I try to perform the login on the site, the following error message appears:

"This webpage has a redirect loop"

You can check please?

Link: http://7cloud.com.br/?page_id=233
login: *****
Password: *****

[ * Edited for security concern ]

Thank you.