I installed WP to my domain last week. i added quite some posts. Later on i realized that i need to make the home page and categories more attractive, hence i manually made a index.html file with editor, and put it into my domain directory via FTP. I link the index to another html file which later links to my individual post. It was all fine initially, but after i installed some redirect plugin (so that some pages will be redirected to the index or html files i created separately from WP), my system clashsd showing 'internal server error 500' Hope someone can help. I dont mind to pay if you can help me to setup the website i want. (which i had a sample to show) Thanks
Uninstall the redirect plugin and see if that solves the problem. If it doesn't then you may need to edit your .htaccess file to stop a bad redirect.