No addons available/visible for Kodi running on a Mac computer

I’m new here so I hope I’m writing to the correct place/thread. If I’m not, then please excuse me and show me the right direction.

I’ve noticed that it is impossible to change skin, set weather provider, or do anything that requires download from the internet using a Mac computer.

No matter if I’m using Kodi as a native MacOS application or it is LibreELEC (haven’t tested with OpenELEC on Mac though). If I’m on Mac, then no add-ons for me. It just don’t see any addons.

I’m not such a great Mac user and prefer Windows, so it could be the actual problem – I just don’t know how to set up Mac properly. But the same LibreELEC installed on a PC computer from the same USB stick works as intended, and can download any add-on/skin/etc.

To avoid possible questions:
1. I can use internet on both my Macs
2. I can add media located on other machines in my home LAN to the Kodi library

I’m using the latest Kodi 17.1 downloaded today