Activating plugin breaks nav menu

I have installed DAM plugin and activated it. When I refresh homepage the Title Attribute text for each menu item is cut off and can’t be read. When I deactivate DAM plugin, nav menu returns to normal. How/why would the plugin affect the nav menu height? Any help appreciated!

Site URL: http://www.spirithousebristol.com/

Thanks,
Armin

https://wordpress.org/plugins/dutch-auction-masters/