I run a website which has Adsense ads served on all pages (in the footer for example) and these ads load absolutely fine on all pages of my website. I'm currently building a tool/feature for users and they'll need to be logged in to use it (using Joomla login), however when I test this and log in, Adsense ads aren't being served. Sometimes the containers load/render the space, but no ads load.
I've searched high/low for a solution but can't find any help on this issue.
I've tested Adsense code in several different formats, hardcoded, as a module, reusing known good code from other areas of the site. I've also tried creating a standard text based article for logged in users and Adsense ads won't show here either.
Adsense is showing an issue in policy centre, saying I have restricted ad serving on logged in pages but their help centre is next to useless, I've checked everything they suggest but nothing is working. I have set up crawler logins, no blocking in place, Adsense account is verified and been live for years.
There are a handful of error in devtools console, but these are present on pages where Adsense ads display as expected.
Any thoughts or input would be appreciated.