ok, its not best to have it all one one account....
But use iTunes on your computer.
So connect the iPhone to the computer
Open itunes, go to Device, Backup and you can backup your phone there.
Then you can do the reset.
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results please