Comment Links New Tab

Yes. First make sure haven't changed the "Target" setting to Same Tab. It should be New Tab. Second, you may need to change the "CSS Options" to class or custom and enter a CSS Value specific to your theme. By default it is configured to use an id with a value of comments. In other words, #comments, which is very common. If your theme developer happens to use a different or custom id, class, or combination, then you can find this value by right clicking on a comment author/name link and selecting inspect or inspect element depending on your web browser. After doing so, find id="something", class="something", or id="something" class="something else". Id's are #'s and classes are .(dots). So you would simply select that in the CSS Options settings, and enter them in the CSS Value field if your theme happens to require something different.

Yes. For example, if you enter an optional title all comment author links will have the same title attribute. If you leave it blank they retain/keep their current value. The title link is the text you see when you hover your mouse over a link if set or available.

Yes. You may hover your mouse over, or tap the ?'s in the plugin settings page, and it will tell you the default values, what values are available, and a brief description of what the particular option does.