Not able to use the token

[tusamarco]

From today I was not able to use the access token.
I am able to pull/push if I use :

git push https://<user>:<token>@github.com/tusamarco/proxy_sql_tools.git

But not from sourcetree. 
I have removed my account info in sourcetree and recreated using OAuth, but:
 on github I can see in the application authorization is only read mode and source tree is giving me:

git --no-optional-locks -c color.branch=false -c color.diff=false -c color.status=false -c diff.mnemonicprefix=false -c core.quotepath=false -c credential.helper=sourcetree fetch origin 

git@github.com: Permission denied (publickey).

fatal: Could not read from remote repository.

Also if I try to fetch.

Any Idea why?