Ethel, you see, this is precisely your company's problem. The company is not physically capable of providing clear information. For example, you say Ventura is not compatible, yet YOUR article that you reference suggests that it IS compatible. It says that:

• R13 and later - At least macOS 10.15 (Catalina); supported by macOS 10.15 (Catalina) and later.

So, you contradict yourself, which causes people massive headaches and problems. 

So is your article correct that if I have QB 2020 R17 then it is compatible with MacOS 13 (Ventura) which is "higher" (as you write) than 10.15 ????