I thought I'd come back to this topic because I've now found what I'm looking for with the Shelly 2.5 in combination with a custom firmware (https://github.com/mongoose-o...) that can be found on GitHub and with which it is possible to integrate the Shelly 2.5 perfectly as a shutter actuator in Apple HomeKit.

First of all, the official firmware/app is crap - switch to the custom one immediately! ( if you use HomeKit )

Regarding the custom firmware, I couldn't be happier! Log into the network created by the Shelly 2.5 via the IP 192.168.33.1 and under the network settings add it to your existing 2G4 network ( Shelly's doesn't understand 5G8 ) - Out of the Shelly 2.5 network and log in again using the IP address that your router has assigned to the Shelly 2.5 - This is the only way to access the Shelly 2.5 while it also has iNet access to download the custom firmware.

From then on, it's just a matter of following the GitHub instructions. After 1-2 minutes, log in again via the IP, possibly refresh the browser cache, and set the type of actuator (light switch, shutter actuator, garage door, etc...), save this and reboot the actuator to get the correct UI for further settings. Set up a setup code for Apple HomeKit and you can integrate an unregistered device into HomeKit.

Either way, you need a Homematic bridge because they transmit at approx. 868mhz via BidCos.
As far as I know, there is no Zigbee shutter actuator. Only z-Wave, wifi, bidcos or completely proprietary.
My Ikea stuff on the hue bridge and the HM on the CCU3 work wonderfully via Homebridge with Siri/HomeKit. It's just a bit of fiddling around.

Not a chance. Hue can ONLY be used for light and individual switch sockets. Super for the remote-controlled workshop vacuum cleaner.
You can connect the roller shutter actuator wonderfully to Feller push-buttons. You only have to lay the 4-pole control line for it. For the HomeKit connection, however, you have to set up a Raspberry or your NAS with Homebridge... Unfortunately, there is no real all-in-one solution; every manufacturer wants to seal itself off.