Hi @srdjan.suc
This is because the Official feed is disabled for you.
Please see here:
This bit:
Official - The official online UiPath feed, where you can find the activity packages that are officially supported by us. This feed is disabled by default, and has the following source:
https://www.myget.org/F/workflow/
.
Simply make sure that the feed is available in your feed settings and it will work.