Sometimes my Youtube comments don't appear in the comment section, how do I make them visible?

On some videos, some of my comments would show up in the comment section while others don’t. Even if I were to respond to another poster.

For example, I responded to a top comment that did show up when I log out, I received a notification response from that person, went to reply back with a second response but that second response was apparently invisible to that person after I logged out. It made it seem like I never replied back.

How do I fix this in my settings and why does this keep happening? Is it a Google+ related issue? Apparently I’m not alone with this problem from what I’ve understood. Though I couldn’t really find any proper solution about it.