Using Nirvana theme on WP with SiteOrigin PageBuilder. Have been working to optimize the website. Yesterday the mobile display disappeared. The desktop and tablet displays are fine. I get the header, menu, and footer, and nothing else. Dreamhost suggested switching to their Twenty Seventeen theme, which I did. The mobile display works, but it looks terrible! I want to switch back to Nirvana. I am not a coder. Is there a non-coding solution? TIA for any & all.