Hi! I understand the LES MILLS+ mobile app is hanging and not playing videos, even after you uninstalled the old OnDemand app. Let’s work through this together to get your workouts up and running again.

To start, could you tell me if you’ve already tried some common fixes like restarting your device or checking your internet connection? Also, are you using the latest version of the LES MILLS+ app and your Windows OS up to date?

Meanwhile, here’s a step-by-step checklist to troubleshoot video playback issues on your Windows device with the WebKit browser:

1. Restart your device: Close all apps and restart your Windows system. This can often clear temporary glitches.

2. Check your internet connection: Ensure you have a stable and sufficiently fast connection (streaming requires good bandwidth).

3. Update the LES MILLS+ app: Since you mentioned uninstalling the old OnDemand app, please verify you have the newest LES MILLS+ app installed from the official source.

4. Log out and log back in: Open the LES MILLS+ app, log out of your account, then log back in. This can refresh your session.

5. Restart your router/modem: Sometimes network issues cause playback problems. Power cycling your internet hardware can help.

6. Update your Windows OS and browser: Make sure Windows 10 is fully updated and your WebKit-based browser is the latest release.

If after these steps the videos still hang or won’t play, the issue might be linked to app-specific cache or settings corruption. In that case, clearing the app cache or reinstalling again with a fresh restart (step 1) can help.

Please try these and let me know how it goes, or if any step gives you trouble. We can also dig deeper into app logs or network diagnostics if needed.

Are you satisfied with this approach so far?