Try the test version of the hub https://homey.app/nl-nl/app/nl.hdg.mqtt/MQTT-Hub/test/ and the client MQTT Client App voor Homey | Homey
They both have fixes to connect more easy. If you don’t succeed in restarting in one go. Disable broker, client and hub and restart in same order.
See MQTT Hub/Gateway - #808 by robertklep for some details.
