Baselines of managed hosting environments when built fresh are basically blank in settings. Some hosting providers leave it blank wide open for most anything. Some create boilerplate settings to protect initial startup of a new client. When shopping around you will not be shown the difference until you have purchased and operate the hosting environment. If blank? Be prepared for a full on attack! Bad Bots to DOS attacks flood your system shuts your sites down on a infinite loop of attacks. It may take weeks to months to filter it all out if not experienced in adding the needed settings to keep bad actors out of your website. There are quick fixes from the experienced website developers. Beginners will be completely lost on why the site is so slow and why is it a dead site. Hosting support will basically tell you to up grade to higher service. That will not repair the issue. Support for your hosting is not there to repair... They are fixers not repair specialist. Quick fix is a bandied to bring you back again and closer to an upgrade $$$$ Hosting company wins you just upgraded with a broken system. Conclusion... Hire a website design consultant. Find the areas in need or repair and  then determine who can do a REPAIR NOT a FIX. FCW Repairs!