Your charging port is dirty.
Lightning cable isn t charging.
The information isn t included in backups and isn t shared with apple.
This can result in the ipad not charging or losing more power than it is gaining.
If your case still isn t charging try charging with the cable that came with your case.
Sometimes wires can break while they re still inside the sheath.
But lightning cables get a lot of abuse and problems aren t always apparent to the naked eye.
One of the most common reasons why your iphone won t charge is because dust lint or other debris has accumulated into the charging port preventing the charging connections from working properly.
If none of the tips above help it s time to contact apple support or make an appointment for service support at an apple store.
But speed isn t the only benefit of the lightning cable.
Open the case lid with your airpods inside.
If an alert says that your accessory isn t supported or certified these alerts can appear for a few reasons.
If all else fails.
If your cable looks like that and it isn t properly charging your device throw it away and get a new cable.
Developed to output impressive power ratings a lightning cable can also seamlessly charge the more power hungry units including ipods and ipads.
If you must charge using a pc don t use the ipad while it is charging.
Your ios device might have a dirty or damaged charging port your charging accessory is defective damaged or non apple certified or your usb charger isn t designed.
The ipad is probably still charging but it isn t getting enough juice to display the lightning bolt that indicates it is charging.
Check the charge status.
Make sure that the lightning to usb cable is firmly plugged into the charging case and usb power adapter.
An apple certified lightning cable or charger will have a made for iphone label that looks like this.
This is extremely convenient if you own more than one device but don t want to wander around with multiple cables in your pocket or bag.
Good luck i hope you figure it out.
Until it works again go up a notch with a stronger tool.
However it charges slowly.
Even if you don t periodically try fitting the lightning cable in again.
Then make sure that the power adapter is correctly plugged into a power outlet.