Question on Govee AI sync box 2 with PC

Stupid question but I read a review, and I'm assuming the reviewer got it wrong. You don't need the windows app to sync the govee lights to your monitor when hooked up through the sync box right? You can do it just through the mobile app like with every other product.

Also does anyone know why there's so many people claiming the kit doesn't work here?

https://uk.govee.com/products/govee-ai-sync-box-kit-2?variant=43720542585005