There are two types of cell references: relative and absolute. Relative and absolute references behave differently when copied and filled to other cells. Relative references change when a formula is copied to another cell. Absolute references, on the other hand, remain constant, no matter where they are copied.
Answer: Have you tried restarting your ipad or Shutting down? Or closing your ipad and waiting for a little bit so It can leave Or you can try Pressing it harder.