Is skipping the free Atlassian account creation step a violation of the license terms?

[Zoltan Kosa]

It is possible to download the Windows installer from the Sourcetree site , launching it, skipping the account creation step and use Sourcetree.

Is skipping the free Atlassian account creation step a violation of the license terms when installing Sourcetree? 

Does the sentence "You must register for an account with us in order to place Orders or access or receive Software." from the license agreement include the "use" of the software too?

If the registration is mandatory for use, how can it be performed after the user skipped the registration during the first installation? (The option is not available when I try to reinstall Sourcetree, following these steps for uninstallation)