Litespeed Caching

If you're using a Litespeed server, you'll want to enable the LiteSpeed WordPress plugin so you can add some exclusions. You can do this under the "Excludes" tab in the plugin settings. Add the following:

Do Not Cache URIs

website 
mockup

Do Not Cache Query Strings 

access_token 
ph_apikey

Note: If you are using the "Two Factor Authentication" security plugin on your site, we recommend trying to deactivate and re-activate once to see if it helps.