Can i Erase face time from my iPad - Tablets & eReaders

Maybe you can use iOS Data Eraser to help you erase everything on your iPad. You just need to connect iPad to computer via usb cable, open the iOS Data Eraser tool. After a short time scanning, all data on iPad will be scanned out and displayed on program window Then you can preview and choose them to erase.
iOS Data Eraser Permanently Wipe out Data from iPhone iPad iPod

https://www.techwalla.com/articles/how-to-lock-an-ipad
Locking your iPad requires entering a four-digit pin every time you turn on your device.
Step 1
Select the "Settings" icon from the home screen.
Step 2
Tap the "General" tab on the left side of the screen.
Step 3
Hit "Passcode Lock" on the right side of the screen.
Step 4
Select the "Turn Passcode On" option at the top of the screen. You also can elect to change your password and when it is required.
Step 5
Enter in a four-digit pin that will act as your password.
Step 6
Select "Erase Data" if you would like extra security. This option will erase all data on your iPad if the incorrect password is entered 10 times in a row. You should carefully consider this option because it can be quite risky, especially if you tend to forget passwords.

rase your device with iCloud

1. From another device, go to icloud.com/find.
2. If prompted, sign in with your Apple ID.
3. Click All Devices at the top of your browser window.
4. Select the device you want to erase.
5. Click Erase [device] to erase your device and its passcode.

More items...

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

https://support.apple.com/en-gb/HT204306 Do not know passcode for ipad Google Search

see if this helps you out.

You need to do a system restore. Try this (https://support.apple.com/en-gb/ht201263) or this (https://support.apple.com/en-us/HT204770)

There seems to be a software glitch. The best way to fix this is to backup your iPad on iTunes or iCloud first then restore your iPad to factory settings by:
Clicking on the 'Settings' Icon, then General > Reset.
** Remember to make sure you have backed up your iPad as mentioned above **
Finally click on 'Erase All Content and Settings'

Once this is complete you can restore your iPad via the method you used to backup the iPad, either iTunes or iCloud

Put ipad back to default settings. Settings menu--This will erase everything on the iPad so you can start as a new user. It will erase original users saved info so you can input yours

Try putting your iPad into DFU mode, and then restore it with a computer with iTunes installed.

Please note: this will erase and delete everything on the iPad.

The article can be found here, on Apple's website:

http://support.apple.com/kb/HT1808

Hope this helps!

see here:
iPhone or iPad Ran Out of Storage Space Heres How to Make Space Available... How to Free Up Space on an iPhone or iPad

Try a basic reset. It will not erase anything. Make sure the device is not plugged in. Hold the home button & power button at the same time until you see an apple on the screen. This will reboot & relaunch the software. It solves a lot of these performance problems.

I’m happy to help further over the phone at https://www.6ya.com/expert/clint_f00dc48f472715e0

Your iPad might be muted. Try switching the small switch on the right side of your iPad. It should be above the volume buttons.