I have tried for three days to connect to my AAG Cloudwatcher with KStars 3.7 with no luck.
I keep getting this error:

[ERROR] Could not connect to AAG Cloud Watcher. Handshake failed. Check port or cable.

I tried my other Mac computer running an older version of KSTars and it connected just fine - so the device and cables are OK.
I went back to my normal MacMini running OS 14 Somina and ran the Cloudwatcher standalone ap and it connected perfectly.
This show that the computer and OS are OK seeing and connecting to my Cloudwatcher system.

While I was connected to the stand alone ap, I then tried KStars 3.7 again and got this error:

[ERROR] Failed to connect to port (/dev/cu.usbserial-A9R484KV). Error: Port failure Error: Resource busy. Check if device is connected to this port.

I expected that - as the stand alone ap was connected to it. But that shows that INDI can SEE the port without any issues.
So I quite the stand alone ap and tried KSTars again - and again got the first error message that the Handshake failed.
I rebooted multiple times and still cannot get it to connect with KStars 3.7.

Any ideas?

I just downloaded and installed Stellarmate with Stars 3.7 on a Raspberry Pi 4.
Again the AAG Cloudwatcher is not recognized. I then switched over to an old install of Kstars 3.6 on Stellarmate and AAG Cloudwatcher works fine.
The only thing I changed was Kstars. It's 3.7 that fails, but it's the recent version of INDI that is no longer recognizing AAG Cloudwatcher.