That was by design - the birthing system was simplified so now it's just werms that get birthed and you have to merge them into canals
r1.0 stands for release 1.0release versions are later (more updated) than 4.37b
The posted link is the one I use from the tfgs site
https://parasite-infection.fandom.com/wiki/Parasite_Infection_Wiki
I'll try again but I'm not sure how to fix it, I'm using infinite time and no limit on the invite
Thanks, I updated it