I try to experiment various templates to decide which one works the best for our needs.
Unfortunately, I am having similar issues. Checking the Plugins after the my installation and giving you access to the site, I observed that different versions plugins are utilized and different type of plugins.
At this point, I assume that the version you provide online, is not the same with the one you are installing after we give you access to the server. This is why everyone has issues.
Please, respond ASAP before I proceed with further actions.