Have you tried the sony site? Have a look through their FAQ's it might be a known problem. There might also be some software from sony if your keyboard has any special functions. Have you tried removing it and reinstalling again?
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This 2D animation about monsters is illustrated in a Van Gogh painterly style
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.