Intergating Bitbucket On premises instance with collabrator

Hello,

 

I beeb trying to intergrate Bitbucket on premises instance with Collabrator. I followed the tech notes avaialble for the integration. in the integration document, I was asking me to provide administrator credentials of bitbucket server to establish integration, Due to security reason bitbucket admin credentials cannot be provided to me or to any others within the organisation. If I try to add the credentials of my bitbucket account during integration it throws me an error (Error: Could not load repositories)

 

So is there any other way to integrate collabrator with bitbucket on premises without Admin credentials from bitbucket server?.

 

Thanks