revolution slider (Highend) links not working

Have a 4 slide group, created a button and link to ‘drop below slider’ on page. The button link works on slide 1 and slide 2. Slide 3 and 4 are identically programmed but they do not link to page below slider. Hit the button and it doesn’t budge. My host tech verified they were identically programmed and was at a loss as to why the last 2 slides will not utilize button/link. They also increased memory to make sure that was not causing an issue but it did not resolve. Thanks!