Due to thousands of attempts to hack every wordpress site on my server, I have had to block wordpress logins by IP Address.
If you are my customer, please copy and paste the "Allow from" lines into an email to me and I will get you added asap.
This will not affect the way visitors see your website, only the back-end logins.
If you do not have my email, it is my name, at my name, with a .net at the end. I am making this difficult for a computer to read to minimize spam.
Allow from 184.108.40.206
Allow from 220.127.116.11/24
This will keep your wordpress secure, and should be worth the inconvenience.