How come my Bluetooth keyboard won't connect to my ipad anymore and how do I fix it?

How come my Bluetooth keyboard won't connect to my ipad anymore and how do I fix it?
Added (1). I had to change the batteries so could that have anything to do with it

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How to email a letter on an ipad that is in books?

How to email a letter on an ipad that is in books?

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IPad says not charging at 98 percent?

IPad says not charging at 98 percent?
Added (1). It stops charging around 95-98% and says "Not Charging"
Does anyone know why it does this?

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