Anything from 2 days to 3 months is normal. Mine was closed for 3 months. Afterwards, they opened it but kept the “business” page account blocked forever, effectively making it impossible to ever use Facebook for ads again. I have never violated any ads policy, though, and they also never claimed it. My guess is they just don’t want certain types of ads – mine were for fantasy and sci-fi novels on Amazon, so it might just be anti-competitive behavior against Amazon.
Put it as you like, Facebook’s business is dying. You cannot constantly alienate your customers and think “they’ll just come back anyway.”