Hi Shubham, in which step are you stuck exactly? Where you able to enter your Atlassian ID credentials? Or are you stuck at trying to connect some other service (like Bitbucket Server or Github) to Sourcetree?
Please send us a screenshot so we get a better understanding and can help you better.
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
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