I want to add a Bitbucket Cloud account in SourceTree. And always show error:
Failed to check login for user [Username]
Unable to connect to the host service
An error occurred while sending the request.
The request was aborted: Could not create SSL/TLS secure channel.

I found the same question and want to enable TLS 1.1 and TLS 1.2, but my SourceTree version can't find the checkbox.

How can I solve this problem?
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System: Windows 7
SourceTree Version: 3.3.8
Git Version: 2.25.1.windows.1