Problem in Earthlink WordPress Install?
Please confirm which version of you using of Wordpress? EarthLink support PHP.5 or greater version. If you have an old version of WordPress please upgrade it and check it works or If its work you can proceed it and if it doesn't work. Go to the Earthlink website. Find their contact email and make email them which problem of you having regard WordPress, because after upgrading of WordPress this problem will be resolved by Earthlnk.
Otherwise, If your problem not solved, try to another hosting service. 000webhost is one of the best web hosting services on the Internet.
Hope this solution will work successfully.