Hey @karlbernhardinkropf,
Force Refresh is meant for visitors who already have your site open in their browser. When you click “Force Refresh Site” (or schedule a refresh) on the Force Refresh page in the Tools menu, any open browser tabs will reload the next time they check in. It won’t refresh anything on its own when you publish an update, so you’ll need to trigger a refresh after you make your changes.
To your bandwidth question, a longer interval is totally fine. The interval is just how often open tabs check whether you’ve requested a refresh, and that check is a very small request, not the whole page. The page only reloads when you actually trigger a refresh. With updates once a day to once a week, anything from a few minutes up to the 4 hour maximum would work.
If you’re more concerned about server load, you can also set “Update method” to “Static file” on the same settings page. That has browsers check a small static file instead of going through WordPress, which puts much less strain on your server.
One thing to keep in mind: Force Refresh doesn’t clear caches. If a visitor opens your site fresh and still sees old content, that’s usually coming from a caching plugin, your host, or a CDN, and you’d want to clear the cache there after making updates.
Let me know if you have any other questions.
