Thanks Go Daddy Support for your interest. Yes I have a support ticket (19795800) and have had some back and forth with your support via email. I would be happy for you to review the discussion and let me know if you have anything to add.
Unfortunately my problem persists, on an intermittent basis. Some days I can log in and post content to my site, and other days like today I have been unable to log in all day. I have gone through all of the suggestions your team has so far suggested and I still haven't found a resolution. I confess I am considering switching hosts as has been recommended by others on this thread.
I appreciate your help with this since I have paid my money in good faith (2 years in advance) and feel like I am not getting the service I deserve in exchange. I would like to avoid the bother of switching hosts if possible, but can't go on working like this much longer.