Actually, what benefit would that option have in this game?
There is always something happening and you can adjust the amount of time in the game settings yourself about how many days should pass until the billions from every side attack.
Delete all files in
delete old trainer, clear internet browser cache/memory and get latest one.
make sure trainer in is folder excluded from virus scans.
may need to be added to exclusions as well. Reboot PC to clear excess
memory and try again.
If it still won't activate, it probably patched again so you will need to make do until next trainer update.
I've just tried this and it didn't make a difference.