For which versions of Moodle can I use Edwiser RemUI?
The Edwiser RemUI theme file is available for Moodle versions 3.0 to 5.0. However, we provide theme support and updates for stable version of Moodle that is Moodle version supported by Moodle.
We release a compatible version of the Edwiser Products for new Moodle within two to three weeks of release from Moodle