Problem with forum menu and forum log in menu

Hi,

I have a problem. When iam in the forum index and i hover over a joomla menu item called "informatie" than the menu slides under the forum menu. That makes some parts unvisable. I would like to make it slide over the forum menu.

The second thing is when i press on login in the forum and i want to add my acount details, the menu disepears and i have t press a second time.

My site:

www.tvchannels.store/tv-channels-forum.html

Please see attachments

Thank you!