The main reasons are as follows:
ip addresses conflict. Procedure
The system network Settings are incorrect.
Workaround for ipad not connecting to wifi:
First, delete the network configuration.
Tap Settings on the ipad.
Go to \"WLAN\" Find the network that you can't join and click on it.
Click the \"Ignore this network\" option.
The ipad will then ask if you want to \"ignore\" the network. Tap yes.
Now that the network is deleted, rescan and try connecting again.
Two, restart the router
The router can not connect to the Internet, so the ipad is connected to the Internet, but the problem is often encountered, just restart the wireless router can be solved.
Restore the network Settings of the iPad
In the ipad, find \"Settings,\" then select \"General\" and find \"Restore.\"
Find the \"Restore Network Settings\" option in Restore and click on it to enter.
This will delete the previously configured network, so the ipad will remind you to \"restore\" and click on it.
Then restart the ipad and re-scan the wifi network before connecting.