Hi William,
Thanks for reaching out and thank you for using Crio Pro WordPress theme! Sorry your having a hard time with your page and menu links. It definitely shouldn’t be behaving like that, it seems like the server can’t find the linking URLs.
Try clearing all cache associated with your website, including page cache, browser cache and any sever side caching assistants you may have running. Then refresh your page and see if that restores functionality. Sometimes we need to clear cache periodically to rebuild a potentially corrupt database.
I hope this helps. Let us know if you have any other questions.