Hey Jan, I can see where the confusion is coming in. Relume and Webflow do not maintain a synced state.
When you bring a Relume project into Webflow, it's better to think of it as a copy/paste function, rather than a syncing function.
If, after copying wireframe pages into your Relume project, you want to change a component, you'll want to copy that component directly from Relume's Webflow app's Component Library, and paste it into the page.
The downside is that when you do this, you don't get the benefit of Relume's AI creating your copy and such for that section, so it's best to poke holes in your wireframe before adding it in Webflow!
Long story short: once you've set up your Webflow project based on your Relume project, you're pretty much operating in Webflow from there on out, using their Webflow app to add additional components into specific parts of the project as needed.