its a nightmare i use divi and elementor, i buy motopress theme hotel, and its frustrating work, when change de background color in preferences to black, all pages are black, but when change the text to white, can not see the text, because in editor its white, and i add a form and the field text are black and in the bloc preferences, does not have option for change the text form color. and in all pages i see a header (name page maybe) and does not find where change the color for this header , which its black like background and its a big problem.
Thanks for your questions. The Booklium theme is a Gutenberg theme so the content of the pages should be edited by means of the default block editor. It was not meant to be used with Elementor or Divi. All available style customizations can be found at Appearance > Customize.