Mac
This is a scam popup. Don’t call the phone number if given.
1. Force Quit Safari.
Force Quit .
Press command + option + esc keys together at the same time. Wait.
When Force Quit window appears, select Safari if not already.
Press Force Quit button at the bottom of the window. Wait.
Safari will quit.
2. Relaunch Safari holding the shift key down.
This will launch Safari in Safe Mode.
3. Turn off wifi and turn it back on.
Turn off Wifi. Click Wifi icon in the menu bar and select “Turn Wifi off”.
Visit another website.
You won’t have internet connection.
Turn on Wifi. Click Wifi icon in the menu bar and select “Turn Wifi on”.
Select your Network.
Close pop-up ads
Start by closing any pop-ups that are open.
- If a pop-up on your Mac includes a "Don't show more alerts from this webpage" checkbox, select the checkbox before closing the pop-up.
- If you see a Block Alerts button after dismissing a pop-up on your iPhone, iPad, or iPod touch, tap the button to stop showing alerts from that webpage.
If a pop-up won't close:
- On your Mac, force Safari to close. The next time you open Safari, hold down the Shift key while Safari opens. This prevents Safari from automatically reopening any windows.
- On your iPhone, iPad, or iPod touch, force Safari to close. To prevent Safari from automatically reopening any windows, go to Settings > Safari, then tap Clear History and Website Data. This also removes your browser history and cookies.
https://support.apple.com/en-us/HT203987