Building speed ups will not work, does anyone know why?

There were similar previous reports about such problems. If this happened to you, simply go to your mail, and check for system updates if there is an available update. If it persist, you much have probably tinkered with your system clock to advance the countdown. It happened to us when we were checking to see if there is any way we could cheat the game counter, and we ended up penalize thousands of days for the wait time -- which probably would probably render your building speed ups useless. Otherwise, you should probably get a help ticket with your case.