The majority of Hackspace communication is done via the WhatsApp commmunity. This contains a general chat, and many associated chats for specific intererests.
To join the group, ask a director to add you. This is a member-only community.
In each room, the contact details for the room lead can be found on posters. These can be used to contact the room lead directly when necessary.
The GitHub issues board can be used to log specific issues, so that they do not get forgotten. This is open to the public.
It can be found on the Cheltenham Hackspace GitHub.
There is a Discord group, but it has been superceded by the WhatsApp community.