How do I set WandelWeb to Unrestricted on a Samsung?

Samsung Galaxy

1. Open Settings > Apps > WandelWeb.
2. Tap Battery.
3. Choose Unrestricted.

Also check the sleeping lists

Samsung can automatically put apps you haven't used for a while to sleep, even when they are set to Unrestricted.

1. Open Settings > Battery (or Device care > Battery) > Background usage limits.
2. Make sure WandelWeb is not in the Sleeping apps or Deep sleeping apps list.
3. If needed, add WandelWeb to Never sleeping apps.