Take a look here for the best recommend aps with real debrid setup.
Please review this for all firestick issues and guides, if the following hasn’t worked feel free to ask.
This should resolve most to all issues.
Kodi mega guide.
Please read this
Before you post or ask about IPTV, Free links or any of that info without a RD account you need to use our search function as this info is HIGLY talked about with tons of info. Bottom line is if you want to use kodi and get free links or streams without using RD it wont happen or work well, they come and go. The best option to use kodi is to pair it with Real Debrid which is covered below.
Make sure your real debrid is up-to-date.
Re authorize your account on the app/apk you are using
Delete your devices in real-debrids website and re add them
Make sure they are added in real debrid.
These steps are a must and will solve the issue 9 out of 10 times. Also check real debrids Twitter for status updates.
Welcome to the community. As a newer user please use the search as this is a common issue/problem.