Storage full, not freeing up after deleting
Hi
I have an old ipad A model. 16gb.
I have alot of books on the ipad on both kindle app ( 2.9gb) and ibooks (2.3 gb) Together 5.2mb. The other apps when I look in storage, have storage of roughly 400mb. It says I have a total of 13gb of storage with 12.6gb used. Even if I delete books on kindke app, the 2.9 gb does not go down. Everything I open it up the storage available will change now saying 44.2mb available. Earlier this morning it said I had 100mb available, two days ago over 300mb free.
I think it too old to upgrade.
I have done all the actions suggested on Google search like delete oapps, clear photos but to no avail. Sometimes when I open and start reading it will close down after one page.
Help