Hi marloes,
IF you have not made any code customization then removed theme attitude pro theme from your dashboard and again install the fresh copy of attitude pro theme from your account page and reinstall it again. Remember, while doing it make a backup of theme if you have customised the code. If still your problem is not solve then Email Us your temporary username and password and we will have a look on it.
Please don’t forget to send this forum Url too.
Thank you!