If Google AdSense account pages are not loading, not working properly, are loading very slow, loading endlessly or the pages load but have no data then the problem might be caused by the Adblock solution if you have one installed. In this case, you will need to disable the Adblock for the AdSense pages.
Having an Adblock solution enabled in AdSense might affect all pages or only specific pages like Policy Center and Ad Review Center.
Another cause could be that the necessary scripts are blocked by the mobile network internet provider or the VPN provider. In the case of a VPN provider, you may be able to disable the adblocking feature in the VPN extension or application.
If you can't find a solution, you could try the Low Bandwidth (mobile) version of Google AdSense at https://www.google.com/adsense/m/.
Screenshots with how the problem might manifest: