I'm having the same problem again.My IP is still the same.
Either GoDaddy removed my IP from ModSecurity whitelist or it's another issue.
For me,the only solution at this point is to find a better hosting provider.This is not the first time GoDaddy does major upgrades without notifying clients which then messes up the sites.This particular issue started about 2 months ago but they haven't been able to fix it yet, or maybe they don't want to ?
Before you move your site to another host make sure the new one doesn't have the same issue.Browse through their support forums or Google it.