[APP][Pro] Philips Hue Zigbee (Without the bridge)

Are there more Homey users with problems connecting to the Hue bridge? Since this morning all my Hue devices are not connected anymore. The app keeps searching for my bridge. However my bridge is connected to my network and with my Android Hue app I can switch my lights on and off.
I just checked the ‘meethue.com’ website. In my account I can see that my bridge is online. Under the ‘Applications’-tab I can also see that my Homey has a connection. But it says that the last activity was 16 hours ago.
I have a Hue bridge version 2 with software version 4.10.0 (9396) and a Homey Pro with Hue app 5.5.4 and Homey firmware version 7.1.7. Restart of the Homey and the bridge didn’t help. Nothing has been changed or updated since yesterday.