Have you made sure that your Kindle Fire has been updated - Amazon update page here.
Have you tried resetting the Kindle - press and hold the start button for 20 seconds then release it. It should re-start. Wait 5 minutes and try to connect again.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.