Hi Samantha,
Thanks for writing in! Please check the following post on how to use different page templates (https://theme.co/apex/forum/t/page-set-up/49025/2?u=mldarshana).
If you’re still having issues and If you’re using a caching plugin, make sure to purge your server cache on your server. If you’re using a CDN service like CloudFlare, you need to clear it’s cache as well and then clear your browser cache before testing.
If you have an active child theme, please disable it temporarily and see if your child theme customizations cause this issue.
Also disable your 3rd party plugins except Cornerstone plugin and test your issue further. If the issue resolved, you can then activate your plugins one by one to see which plugin cause this issue.
If you’re still having issues, please provide us with your login credentials in a secure note to check your issue further.
Thanks!