When you go to page 2 of a forum category, and try accessing any of the threads, the links to the threads will have the ?page=2(or any other number) URI parameter. added.
You can email support, yes, or follow the steps outlined here. https://armorgames.zendesk.com/hc/en-us/articles/222651347-Nice-site-But-how-can-I-get-help-?mobile_site=true