If video playback is not working, you should clear Safari history and website data. Go to Settings and choose Safari. Tap Clear History and Website Data and when a pop-up window shows up, confirm your action by tapping on Clear History and Data. You can also try force quitting Safari and launch it again.
id you try to reset all settings?
Settings -> General -> Reset -> Reset All Settings
It will just reset all system settings to default [permissions for all apps to access mic, camera, to send notifications, etc], you will loose your prefered settings, you will also be asked to select again your wifi network website design Ottawa and input its password, but if you have celular data 3G/4G it will retrieve your wifi setting from icloud again. You will not lose any files, documents, photos or apps. [no data is deleted] This "reset settings" helped me on the past on other iOS versions problems. It may be worth a try.
Please, don't click "Erase All Content and Settings" by mistake, because it is just below the correct option "Reset All Settings" or you end up erasing all data, docs, everyhing.
For Sound:
Go to Settings > Sounds (or Settings > Sounds & Haptics), and drag the Ringer and Alerts slider back and forth a few times. If you don't hear any sound, or if your speaker button on the Ringer and Alerts slider is dimmed, your speaker might need service. Contact Apple Support for iPhone, iPad, or iPod touch.
Play web videos in Safari on Mac:
- In the Safari app on your Mac, navigate to the web video you want to play.
- Click and hold the Audio button in the Smart Search field or in a tab.
- Choose Enter Picture in Picture. You can drag the window to any corner of the screen and the window stays put, even if you switch desktop spaces.