git - Can't login to Bitbucket on 'Github for Windows' -

i've followed tutorials on how make github windows work bitbucket,

and in point try login strange bug or anything.

here's image:

the problem can't click login button , have no idea why.
i'm stuck , can't proceed on tutorial.

that login using bitbucket https url (and i did manage working @ time).

if https address doesn't work, sourcetree can offer alternative gui.

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but shown in this tutorial (or this one), use github windows ssh addresses.

make backup of ‘github_rsa.pub’ ssh public key file.
copy contents of c:\users\{user}\.ssh\id_rsa.pub file , save it.

• visit github site , create account if don’t have one: https://github.com/settings/ssh
• account > edit profile > ssh keys
• add new key label: “default public key (nopass)”
• copy public key (c:\users\{user}.ssh\id_rsa.pub) github

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the 1 tutorial have found using bitbucket repos https url this one (from jeremy):

• install github windows (gh4w), open program
• set username/email globally right avatar in non-github projects

 git config —global user.name “first_name last_name” git config —global user.email “my_name@example.com” 

• add new repository (either preexisting or blank directory)
• in repository, click "tools" > "settings" link @ top
• go bitbucket, find clone link -- choose "https" option
• back in gh4w, in "primary remote (origin)" box enter link got in step #4
• update settings
• back in repo view of gh4w, click "publish" link @ top
• wait while spins, confirm it's there in remote.