Dspace connector , Endpoint

when i try to get all communities and stuff , it doesn’t show me nothing , it looks like empty
The people who admin the repository page , share me this image that it suposses has the endpoint

but i use " rest " and click down on Get Collections and communities , is empty , do i have to put some text like GET / communities in the Endpoint blank?

If someone could help me please

Any advice for fix it? , i already tried , " / communities " or " /collections " even " GET /collections " but it still empty