How do I switch from a website template to html w/o deleting and getting a new subdomain?

Browser: lindadiana,3

Your template is written in html. Just use an html editor to make whatever changes you want.

You copy all your text to text file first.
You want to copy all bravenet services codes also.

You delete all pages but the index.html
using file manager.
You rename the old index.html
to oldindex.html for now.

You then make a new first page and save that as index.html.
You make all your others pages and link all pages.

After the new version is working
you go back and delete the oldindex.html
file you not using.