ludug3r0/OpenTLD — comment on commit 6ad2cc13ded4eefaa792d3d2f84173b3537e3521
File:  line 0
By bilderbuchi:

You'd have to contact Zdenek directly, he's the owner of the google group. https://github.com/zk00006
Also, while you're at it, maybe ask him if it's possible to make the group free-to-join, or give admin rights to someone more active, since I've heard quite a few complaints about membership pending, seems he doesn't really care about it anymore.