We strive hard to make Design Upgrade compatible with as many themes as possible. It’s not an easy task. Every theme writes their CSS in a unique way, and treats buttons, tables, spacing, fonts, etc. differently. Here’s where things currently stand with theme compatibility.
These are the themes we actively test with, and are committed to maintaining compatibility for. In most cases, Design Upgrade for LearnDash (free & pro) will work with all themes that are not listed as incompatible below.
While not a theme, we should also mention that Design Upgrade for LearnDash should not be used with the Visual Customizer from Snap Orbital. Using both plugins at the same time will create design conflicts. You should pick one or the other; not both.