What is the exact URL starting with http:// of the wordpress.COM hosted site you refer to please?
And, exactly which wordpress.COM username account registered that site?
This is wordpress.COM support. I’m asking because we cannot accurately answer questions posted here until we have confirmed the URL referred to and verified the hosting.
We provide support only for wordpress.COM hosted sites. Our support docs do not apply to
(1) local installs of wordpress.ORG software on your own server or
(2) wordpress.ORG software installs on paid hosting, and we do not provide support for them at wordpress.COM. That support is found at http://wordpress.ORG/support/
Also, note that we do not provide Jetpack support https://jetpack.me/support/ for sites linked to wordpress.COM accounts with the Jetpack plugin so they display on the My Sites wordpress.com account page.