I am facing the same issue. My site is also hosted on one.com. Just receievd the below message from them:
Thank you for contacting One.com!!
We are unfortunately experiencing a problem with our servers at the moment.
Rest-assured that our technical team has been working double time to resolve this issue the earliest.
For a further update please check the link status.one.com or follow or webpage https://www.facebook.com/onecom. Please don’t hesitate to contact us again if you have further questions, either via email or the online chat support.
Best regards
