Import Demo (Main Demo) failed. Bluehost

I have Bluehost Hosting and the Import Main Demo fails. It doesn’t go further than ‘Currently processing: Content’. I followed the first steps of https://hb-themes.com/forum/all/topic/demo-import-issues-4/ “First, try to disable all of your plugins and then run the importer. If that didn’t work, you can try importing a demo but unchecking the “Attachments” checkbox in the Demo Importer.”
That didn’t work. The second part of that article is not clear enough!
Highend is recommended by Bluehost so no clue why this is not working and what else to do. Can you help me further?