[Plugin: Responsive TwentyTen] Resolution Issue

I have an issue that I can’t solve when I view my site on my ipad or my iphone (and I suppose on other resolutions similar). When the site loads on those formats the text on the menu drops off the menu header line. The main theme works fine on desktops but not when I view it in mobile devices. I am unsure how to fix it in the plugin (all of my attempts failed). Or, if I have to add something to the main stylesheet that effects the plugin?

Which code should I change to fix this? The plugin’s stylesheets or the main site’s theme?

Check out my site: https://comicblvd.com

You’ll notice on regular screens it looks fine, but on smaller resolutions the menu doesn’t stay together.

Thanks! I really need this plugin ??

https://www.ads-software.com/extend/plugins/responsive-twentyten/