a white page where the login page is to be shown in the installer

[Дмитрий_Царёв]

When trying to install SourceTree 3.3.8 (windows 7) after i choose 'bitbucket" on the desktop app(first page of installing) it shows that its waiting for login and open the bitbucket.org OAuth authorization page with confirming the access to my account. After i confirm  (grant access) it redirects to localhost and nothing hapens overthere. The desktop app is not more waiting for logging, its just asks for a choice between bitbucket server or bitbucket. 
After i refresh localhost page it shows mistake "the site doesnot let you to connect. access error" what should i do to finally loggin and continue installation???
Thank you