I have TestFlight at v3.2.3 installed but the next updates fail because I am not at iOS 13 - my iOS is 12.5.7.
No problem I stick with what I have as I can still test my developers apps but newcomers to the team cannot load a legacy version of TestFlight.
They see the message you need iOS13 or load a legacy version. There is no available option list to choose from.
Why is this.