This website is currently running on Joomla 3.10.  Support for Joomla 3.10 ended on 16 August 2023.  The Joomla!Documentation website has the following warning:

Warning! 
This guide assumes you are starting on Joomla 3.10.x. If you are on a earlier version make sure you upgrade to Joomla 3.10 first before moving to Joomla 4. There is no rush. Make sure all your extensions are ready for Joomla 4.x. Joomla 3.10.x will be supported until 16 August 2023.

That site also has a step-by-step set of instructions to carry out the migration from 3.10.x site to Joomla! 4.x.  Version 4.x is supported and details of it are at:  https://www.joomla.org/4/en/ .  It is significantly more secure and has many more features, particularly in audio visual options.  There is also a mass emailing system that can be configured to Canada's anti-spam legislation.  A guided tour of the new Content Management System (CMS) software is at:  https://magazine.joomla.org/all-issues/march-2023/guiding-you-through-guided-tours .  Joomla! remains open source.  The Yellowknife Amateur Radio Society is currently running that CMS version at:  https://www.ykars.com/ .

This is also a chance to clean-up the existing CMS files.  A number of components were installed in the past in order to configure the installation to be used for many other purposes - which have never transpired.  

If anyone is interested in approaching this migration, learning about Joomla!, learning about CMSs etc, please contact NWT Pipe Band to indicate your interest.  While the Pipe Band is primarily a musical organization, there are still opportunities for the administration and running of a society - and those learned skills are adaptable to other organizations.