Why won't my Samsung GT-N5100 tablet connect with any other devices?

I have not used this tablet much since I got it, but now I am finding that it does not recognize other devices. I have tried to send bluetooth files to my laptop, and I have tried connecting to my bluetooth speaker, but the tablet did not find any of those devices and just today I tried to mirror screen with my firestick but my tablet did not find the firestick although my phone found it and mirrored with no problem.
What's wrong?

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