Please check your License LEF and verify that number of allocations is not exceeding the available licenses.
If the license allocation is within the license limit, please log out and re-login back to the Tenant to see if that makes a difference.
It is also suggested to check in an Incognito window or a private browser if the issue is caused by browser cache.
Cause:
When the number of allocated assignments is larger than defined by the license, some users will be excluded. The users will then no longer have access to the hub or the Management Console. The Status column for the users will show Excluded.