Hello @Yash Deshpande,
welcome to this moderated Azure community forum.
You have created an Azure Digital Twins resource and you are assigned the Azure Digital Twins Data Owner Role. This option was available and probably selected during the creation of the resource or you can set it in the Access control pane:
Should be able to see you have access to Azure Digital Twins:
The ADT explorer is a separate website, not bound to the Azure portal so you need to log in again with the same credentials for this ADT explorer.
It is recommended to try this inside an InPrivate browser session.
Make sure you log in with the same credentials. Double check this in the upper right corner where the used credentials are shown.
Also make sure any popups are accepted for these pages.
I just tried it myself and it works for me in the West Europe region.
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