Hi Chloe,
Thanks for reaching out and thanks for using Crio Pro WordPress theme!
More often than not, the cause of this type of error is caching. What happens is, site elements are cached into the database for performance purposes so when you make changes (especially frequent changes), you’d want to clear all cache associated with your site after each update. This includes browser cache, server side cache, and plugin related cache.
One way you can verify that the changes have taken effect is to try pulling up your site in an incognito browser. The incognito or private browser will ignore most caches and generate the latest version of your website.
I hope this helps. Please reach back out if you have any other questions for us.