REFRESH: Try a F5 to Refresh your browser. Publishing will be prohibited if you've exceed your page limit or your storage limit. Have you tried a "refresh"? F5 = Refresh. If that doesn't work, use Shft/Ctrl/Delete. Using this procedure intermittently provides solutions to cache and cookie related interference. A browser works by downloading a page to your computer. Browsers will then show the page from your computer as opposed to downloading it every time you visit the page. This speeds up the process and lessens the traffic on the Internet. Depending on the browser, it will periodically check the website for a new version of the page and download it if it has changed. If you don't see a change that you expect, then press F5. That tells the browser to go to the site and download the page now.
Your account allows for 25mb of disk space. You are attempting to exceed that amount, so it will not publish. You may add 1gb of space for $2/month, or you can look in the file manager and see if there are files no longer on a page that you can delete to free up some space.