Can't seem to get on Team Chat on my computer but it automatically downloaded on my phone and IPad

I can't see my zoom workplace on my PC. I can't find a place to share or sign in . I can't access it from my computer. So when links are shared I have to edit on my IPad and I would rather the PC.  What am I doing wrong? where do I go to sign into our work area? Why does it only work on my phone and IPad?