Deconz add-on: Tasks in wait state

Hi all - I have the deconz add-on running in my HA, and all devices are connected fine. However after some (random) time all devices stop receiving instructions, and I can’t control anything anymore.
The log shows all tasks that have been sent in wait state. (Screenshot below)
After I restart the plugin, things work fine again for some random time.
Any idea what might be the issue?