If you have questions about using mojoPortal, you can post them here.
You may want to first review our site administration documentation to see if your question is answered there.
It was very slow when I try to update the webpage in Godaddy? I do not know why. It can not work nearly.
It is likely the problem is with your hosted server or perhaps your internet connection. To check whether saving page edits always takes as long as you are seeing, why not try the same thing on the mojoPortal demo site.
InqInq - I have a shared client who hosts their site on GoDaddy. If it's a shared hosting account, expect to see issues with site speed, especially anything that's not cached, like new content being added through the editor. If you want to stay with GoDaddy, you might want to upgrade your account.