My ipad 2 is having 2 problems?

The first problem is that the appstore apps update won't update, like when you click on the update button, the loading circles appears for only 3+ seconds before turning back into the update button. I've restart appstore and restart my ipad but it still won't update

Second problem is that the icloud password blog keeps popping up. I've entered the password but it still pops up. I even tried to delete my icloud account or sign out but it asked my for my password. I am certain the password I entered was the correct one but it said incorrect password. So I changed my password but guess what? Still wrong password. And yes I also even restart my ipad but still pops up. GRRR!

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