In very few cases, the 64 bit EyeTV 4 software for macOS can not start or has other troubles due to security & privacy settings of macOS. It is a must that Eyetv 4 has this permission with macOS 10.15 (Catalina):

If you need support regarding your EyeTV product please do not hesitate to contact us following this link.

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https://www.geniatech.eu/faq/eyetv-4-64-bit-macos-does-not-start-or-has-other-troubles-security-privacy-settings/ EyeTV 4 (64 bit macOS) does not start or has other troubles – security & privacy settings