Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Gosia Herudzinska,
Thanks for post your problem in the community.
From the error message, it seems this issue is related with the network settings, you may try to connect to a different network environment to see if there is the same issue.
Moreover, as the issue is related to Dynamics 365 but our team have limited resources on the Dynamics related issues, to help you better, I suggest you can post a new thread in the dedicated Microsoft Dynamics Community for expert help.
Thanks for your understanding and cooperation.
Best regards,
Jennifer