Thread:Solara184/@comment-38439752-20200527100755/@comment-38439752-20200611092505

The twins will probably start once the current breeding event ends. Check event board for that date, I can’t remember it from the top of my head.

UK GS seems to be bugged, it allows an upgrade before the level requirements are met. However it doesn’t seem to give you the extra space nor fulfill the achievement, so hold off on that too.