Question Questions ⇒ Problem with login - The submitted form was invalid.

[atilla_be]

Hello DMZX-WEB members.
From yesterday i am trying to fix the problem with login to my board. i was maked 5,6 times fresh clean install and the problem is still alive
So
I was downloaded last update of phpbb 3.3.4. after installing the phpbb i was purchased "Milk Multipurpose" theme by themeforest, when i am installing the theme, problem with login is starting, after installing the theme i can't login to my profile in phpbb, i can't open ACP and i can't make a new registration..
i have a SSL on my host, my website is connected with CF and i was edited cookie setting when installing phpbb, but problem is still alive again and again.
Someone can give me suggestion, how to fix this ? because i can't find solution when using google, i try every solutions but from google, but ....
Sorry for my english.
Regards