By default, all websites hosted by 2MHost will get a private SSL certificate installed for free, the installation usually will be completed within 24 hours of web hosting account activation, or you can install it manually from your cPanel > Security > Let's encrypt SSL.
SSL installation is important step, next step is to force your website to load using HTTPS whenever get a visitor, you can do that using your cPanel > domains section:
and enable 'Force HTTPS redirect'
Allow few seconds for the configuration to be completed before testing your website.