If you are experiencing a 404 – Page Not Found error on your website pages after importing any of the Spyro Demo, then this document will help you out in solving this issue.
WordPress permalink setting might be responsible for this 404 – Page Not Found Error on your website.
Login to your WordPress and navigate to Settings > Permalinks
If your common settings are set to Plain or Numerice, then you need to change the setting to post name as seen in the above image.
After making these changes, hit the “Save Changes” button and the issue will be resolved.