The sentence is: After hours don't raise too much suspicion.
If it helps to understand the sentence in any ways, here is the context: The sentence is from an onscreen notification of a game called "Sleeping Dogs". During a specific mission, you drive a woman around, do some stuff and one of them is sneaking in a temple and disguise as a monk to steal flowers for her wedding. This is the screenshot of the scene with the sentence.
I know what "after hours" means (the time after working hours, likely after 5PM), but putting it into this sentence, it doesn't make much sense.
I have a few guesses of the sentence's meaning:
The game gives you a hint that "It is after hours right now, so it will not raise too much suspicion".
The game warns you that "It is now after hours, so you'd better not raise too much suspicion".
So, what is the meaning of the sentence? Is it a badly worded one?