I can receive the invitation email successfully.
However, when I click the "Accept invite" button in the email, I'm redirected to https://id.atlassian.com/signup/verify-email/..., where I'm asked to enter a verification code sent to my email address.
After I enter the verification code and complete the account verification (multiple times), I'm taken to the Atlassian homepage, but I still don't have access to the space that my manager invited me to.
The verification email displays the following message:
"Enter this verification code to continue setting up your Atlassian account. This code will expire in 10 minutes."