RCR Submit form drop down is empty

We are trying to establish Doors-RTC integration and trying to implement RCR. We were able to establish integration and add collaboration links in Doors, however facing following issues:

1) After addition of collaboration links, while defining a configuration template, we get an empty drop down for RCR submit form (we had selected OSLC authentication).

2) At times for an instance, we are not able to add collaboration links mainly because after authentication, only a blank window is all what we get.

Both are issues are separate.