I just downloaded RadZen opened up the sample app. No matter which of the 3 pages I open, I can't navigate forward using the page numbers or the right arrow. Doesn't work/non-clickable. If i hover over the secret right-side dot, I can click that and go to the last page. Then going back and forth is fine - UNTIL I go to page 1 in which case it doesn't work again as described.
BTW: Pages load slowly. Is it this slow in a live environment?