Hi Yasha,

That's a general Slack policy.  With the amount of traffic generated on
the rocky slack channels, messages on the unpaid hpcng Slack are limited
to about 4 days.  This is why in the last community update that I posted
here it was announced that rocky will be switching to Mattermost. 
    https://forums.rockylinux.org/t/community-update-december-2020/1157
It just hasn't happened yet, mostly because of the holidays.

Dave

On Tue, Dec 29, 2020 at 04:50:57PM -0800, Yasha Karant wrote:
> Unlock messages prior to December 20th in The Next Generation of High
> Performance Computing Community
> To view and search all the messages in your workspace's history, rather
> than just the 10,000 most recent, upgrade to one of our paid plans.
> 
> The above is the message upon reading the current RockyEL "list"
> 
> Start Slack excerpt
> 
> #rocky
> 
> https://blog.centos.org/2020/12/future-is-centos-stream/#comment-183642 Some
> other channels are #rockylinux and #rockylinux-devel on Freenode
> 
> End excerpt.
> 
> Thus, unlike either the Ubuntu (including LTS) Ask Ubuntu or this SL list
> that are available without any fee with full archive access, it appears that
> to get to the RockyEL "list" much older than one calendar week, one must
> subscribe for a fee.  Such a system makes archival information not generally
> available.  If other RockyEL (e.g., #rocky ) readers do not see the paywall
> message and are not paying a fee (or have an institutional "subscription"),
> please comment as to how to get the "archives".
>