Problem in step 2

Hi!
Im pretty new at WordPress. When I import the sample content (.xml) for my template, after I put “Download and import file attachments”, it shows me an error page:
http://omanabienestar.com/wp-admin/admin.php?import=wordpress&step=2
“Oops! That page can’t be found.”

Hosting deluxe godaddy
Template Sensible Pro
WordPress 4.2.2

I would so appreciate any support on this topic.
Thank you in advance,
Rocio

https://ww.wp.xz.cn/plugins/wordpress-importer/