Hi Jim Hicks. How do I delete a Profile on Facebok More. profile name. On my iPad 2. Software iOS 9.3.5

Use iTunes to restore your iPhone iPad or iPod to factory settings

How to Restore iPad Without iTunes

It may be too full. Check how much free space you have. Try to have approximately 3GB free. Delete things that are easy to replace like apps, or music you can download again.

Yes!
Most people are now on iOS 8.4
So.... do you mean back grade? from 8 to 7
iOS 9 will be released in a few days!
https://www.apple.com/ios/

It can be downloaded & installed directly to your iPhone/iPad
Or... as I prefer.....
use my computer running iTunes to firstly Backup the iDevice (using it's USB charge cable)
ITUNES will at this time indicate that there is an update available for your iPad.
Choose to "download only" the new iOS.
If you have other things to do!
Disconnect while the download takes it's time downloading.
Then come back later and plug in USB cable and "Install" the updated iOS.
How to Update iOS Software on an iPad

Can you log in from another PC and change profile settings?

Create a new iTunes profile on your desktop computer with no info and do a restore to that new profile. That should clear it out.

core apps of iOS which cannot be deleted!
1) Airdrop
2) Apple Store
3) calendar
4) camera
5) clock
6) contacts
7) facebook
8) game center
9) iBooks
10) iTunes
11) mail
12) maps
13) messages
14) music
15) newsstand
16) notes
17) photo booth
18) photos
19) reminders
20) safari
21) settings
22) siri
23) tips
24) touch ID
25) videos
- here are 2 different ways to delete an App:
1) t's easy to delete apps from the iPhone or iPad. Simply tap and hold on any icon for about 2 seconds - see them to start to wiggle and tap the X button in the left corner. that's it.
2) For devices running iOS 5 and later, there is also another way to do this is hidden in the Settings app, in the General tab, under: usage.

You can delete songs from iPad with iTunes with ease. In addition, Leawo iTransfer is another easy to use solution. And it can delete iPad songs in batch. Just follow below steps.

Step 1. Run Leawo iTransfer and connect iPhone to computer with USB cable. Step 2.Click the name of iPhone and choose Music library in the left sidebar. The music files will display in the right part.
Step 3.Check the songs you want to delete, and click Delete button in the top middle. Then click Yes in the pop-up dialog.
After that, Leawo iTransfer will start removing music from iPhone, and you'll get rid of the songs when the deletion finishes. With Leawo iTransfer, you are able to manage other kinds of files for iOS devices as well. For example, you can backup iPhone photos to computer with this software.



For more methods, check: How to Delete Songs from iPhone

How to Recover iPad Data with iPad Data Recovery 2018 Update DataKit