Problems with team project

I work as a film editor. We work in an office—my colleague and I. We want to use "team projects" in Premiere Pro, but it is very problematic and does not work well. When I click the "publish" button, the "update" button does not appear for my colleague, and vice versa, when he does the same, the "update" button also does not appear for me. When we reset Premiere Pro, the "update" button appears, but when I click the "update" button and enter the sequence edited by my colleague, we can edit it together, although it should be set to "view only" mode. What is wrong? We work on the same network, on our NAS drive.