My sister probably set years ago that the laptop does not have internet access after 11 pm. Now we do not know how we can issue that again, both have little idea of it. The laptop is already a few years old (8 or 9) and has Windows 7 if that matters.
Does anyone have an idea?
Look in the router settings. Maybe you changed something there
Simply update the operating system on Windows 10 - then all settings are resettet.
That is vmtl. Not on the laptop, but on the router settings. If you have a Fritz box, the setting is "Parental Control".