Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
No explanation why some are still seeing the issue or what the steps are to resolve - perhaps its account related - rather than some having a different issue or are looking at a different site - hopefully more will get fixed soon
After having that exact same error for weeks on all devices its now OK today (the Services and Subscriptions page now shows Game Pass sub and purchased products etc and the sub can now be managed and the subscription and storage usage summaries on the account main page are now OK too) thats with both Chrome and Edge browsers.