At this point I recommend you follow instructions from PG Music Support (or Simon). One thing you didn’t explain: do you want to run BIAB on all three of your computers (one at a time)?

In case you are skilled with moving files around, there are two things that might affect you, given the age of your BIAB programs. In 2018, the GUI was revised (although the old one is still there with a click), but also the folder structure for /BB was reorganized. Files are not where they were. For that reason alone, you might find it better to install 2024 on all machines.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.