page 2 and next page button not working

Hi,
I was hoping you can point us in the right direction. After installing the QA plugin, and building list of questions, the button that is supposed to move to the next page of list of questions is not working properly. Instead of generating the link: https://website/topics-questions/page/2 it is actually generating this link:
https://website/topics-questionspage/2
How do we fix the missing “/” after questions?
We tested it and if we insert that manually, the link will work, it is just that the plugin code is not generating the right path to navigate the archive.
Thank you