Image links in that second page don’t have rel=”lightbox-n” applied. Javascript is ok, so it’s not the case.
THere are same Ajax calls on each page load, so maybe the accordions content is Ajax loaded? In that case try to enable Custom events in RL settings.
Hard to say what’s the problem, but the answer should be in your theme, more than the plugin itself. I’d focus on how the accordions and it’s content are generated.