Hi Mario
What is the AN that you are working on?
I based AN 1217 and my test follow step by step as below
0. Device (Router) join Coordinator (Dongle JN5169)
1. Device report attribute (Window Covering of Endpoint 1, 2 & Model ID of Endpoint 1) periodically 15 second.
2. Unplug Dongle
3. View log of Router. After some report attributes, I see error 0x82 and 0x89.
What are the changes that you did?
I created Window Covering Cluster (because your Stack don't support this ZCL) and Disable Default Response.