Ok, I'm not aware of any push mail limitations at wp.pl (but there could be, I'm not in Poland
)
You can check how many folders you've got with push in Aqua Mail by:
- Long pressing on the account -> options and folders -> folders
- Every folder with push enabled will have help text saying that, below folder name
Re: desktop mail app
It's not about how often you check mail - some desktop mail apps (believe I've seen this with Thunderbird) can put every single server folder into push mail mode, without your doing anything.
Anyway, also feel free to capture the error in Aqua Mail's debug log (please see the link just below in my signature)