This Message?
https://archicad-talk.graphisoft.com/viewtopic.php?f=13&t=49479&p=297632&hilit=
It disappeared (for me) when I switched to Mojave.
I see that's what you're running.
Maybe check your incoming connections, as per my screen shot
in that thread.
EDIT:
Scratch that.
I just checked my settings and realized, the only reason I
didn't get the popup was that I had my Firewall turned off.
With it on... I get the popup again.
Marc Corney, Architect
Red Canoe Architecture, P. A.
Mac OS 10.15.7 (Catalina) //// Mac OS 14.5 (Sonoma)
Processor: 3.6 GHz 8-Core Intel Core i9 //// Apple M2 Max
Memory: 48 GB 2667 MHz DDR4 //// 32 GB
Graphics: Radeon Pro 580X 8GB //// 12C CPU, 30C GPU
ArchiCAD 25 (5010 USA Full) //// ArchiCAD 27 (4030 USA Full)