When you create a website, it error.
Error: Maximum execution time of 30 seconds exceeded
RVsitebuilder requires maximum execution time more than 90 second while this value in your domain name is lower that the process stops functioning.
Increase the Maximum execution time for your domain name.
1. Login to your cPanel.
2. Select MultiPHP INI Editor under a Software category.
3. Select your domain name.
4. Increase value of max_execution_time to be at least 90.