Ah, yep, that would be a layout issue. The easiest way to fix this would be to disable custom comment pages, but another relatively simple fix would be to ctrl + F <td style="vertical-align: top;"> (there are three in the code) and on the first one, add padding-right: ??px; — I'm not sure the exact way the layout is set up so you'll need to mess around with it a little bit — and on the last one add padding-left: ??px;. So it would end up looking like, for example, <td style="vertical-align: top;padding-right: 40px;">. I'd try maybe 15px or something first, since there appears to be like no space between the columns at all.

Let me know if this helps! If not, I can look for other ways to fix it.