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No you shouldn´t reinstall.
Xoops just comes only with an index.php.
The problem is that there is still your old index.htm or/and index.html lying around in your root directory from your previous website.
Depending on the configuration of the webserver from your hoster it will look for different files when someone is trying to only enter your url 'www.jodeewebhosting.com'.
It will check for example like
- index.htm
- index.html
- index.php
- ...
And whatever it finds first will be shown to the user. In your case it is the old index.htm.
So just delete or rename the index.htm to something else like index_old.htm if you still need it and everything should be fine.