Hi @andrew elden,
Thank you for reaching out to Microsoft Q&A forum.
Please review your account inbox for further details regarding the notifications explaining the reasons for the block on your sandbox access.
Your options are limited until you receive a response to your appeal. The duration of this process may differ based on the policies and procedures of the organization managing the sandbox.
If you’re encountering restricted sandbox access, you can refer to the troubleshooting steps below for assistance:
1. Firstly, please log out from all Microsoft accounts currently active in your browser. Subsequently, make an attempt to sign in using your Learn ID.
2. Alternatively, you can try accessing your Learn account by opening a new incognito or private browsing window.
From the end, we've verified that everything is functioning properly. Please find the attached
screenshot for your reference:
For additional insights into the Sandbox FAQ, feel free to visit the link provided:
https://learn.microsoft.com/en-us/training/support/faq?pivots=sandbox
If the answer has been helpful in resolving the issue, please consider accepting the answer by clicking on the “Accept answer" button to help increase visibility of this question for other members of the Microsoft Q&A community.
If you are still facing issues, please let us know in the comments along with screenshots. We are glad to help you.
Thank you.