OpenMandriva on IRC.
IRC stands for Internet Relay Chat.
OpenMandriva is no longer using Freenode IRC. There are Matrix.
Connecting via Libera Chat is described at Libera.Chat.
Regarding why this change is made, users are encouraged to do an internet search of “Why are Open Source organizations leaving Freenode?” and read for themselves.
Linux Geeks doing what Linux Geeks do..