I'm trying to login at the plugin, but page just doesn't load. I already paid for Pro Tools and can't use it. I sent email to support and I had no answer.

I'm using the latest versions of DMS2 and Wordpress and the Sidekick menu version 1.2.7 which I think is still the latest version, and I now need to update the menu. But making any change and trying to save the menu results in a "403 Forbidden Access to this resource on the server is denied!" message. I've checked the permissions and can't see anything wrong and I can make other changes including updating the Hero Nav menu on the same site… sandgateprimaryschool.co.uk. Does anyone know what's going on?

So this has happened 2x and Godaddy is telling me its an issue with Pagelines not them.  
Website: dcd.auto
Cant login and nothing seems to fix it, i have tried to disable theme and plugins but still causing issues
 
any ideas?

I have two sites that are getting the same error when I try to login. I type wp-admin after the domain and I am getting an error message for both sites. 
www.868change.com
After I login to http://www.bstudioproject.com/ to edit on pagelines, I am getting blank screen. 
 

Hello,
I'm starting to use the platforms 5, while installing a second service after installation platfrom5 and theme, I wanted to activate your account. After entering the login and password, nothing happened, reappeared account screen (click and takes us to the login page PageLines). I do not know what's going on?
License developer.
The first service works flawlessly.
I greet and ask for help.
RKA