Set the option in Admin > Lists > Length of Q&A page to 5. Or set any of the other "Length of" options.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.