A. Check for any network outages in your area by visiting the Lebara website or social media pages. If there is an outage, you may need to wait until it is resolved.
B. If there are no outages, try resetting your network settings. Go to 'Settings' > 'General' > 'Reset' > 'Reset Network Settings'. This will erase saved Wi-Fi passwords, so be sure to have them handy.