User blog comment:Tricoro/LINE Cookie Run: Season 5 Preview/@comment-25941223-20150508173813/@comment-26044650-20150508174735

I was able to pre-register twice. Once using the links up above, and once using the link on the event mail we just got today in Cookie Run.

I hope that means I get 200 Crystals instead of 100. But I doubt it. :P