Same problem here. After updating to version 4.0.0 (8519), EyeTV was unable to display TV. Using "Network/IPTV" with "SAT>IP Server" in Setup-Assistant did not work. EyeTV was still unable to find the EXIP 414 SatIP Server. Very frustrating.
After almost giving up, I set the tuner hardware to "Geniatech" and "EyeTV Netstream 4C". Et voila! I can select the "KATHREIN SatIP Server" from the list of network-tuners.
It is unclear to me, why the Kathrein EXIP onIy works if the device is set to Geniatech, but at least it works.
EyeTV 4.0.0 (8519), Kathrein EXIP-414E, macOS Catalina 10.15.2
