Discord is an app that has chat rooms, voice chat, etc. It is free to use and supports all platforms. You can use the web interface and do not need to install anything.

You can join the TechChatTV Discord server with this link: https://discord.gg/kVzvTTyZ

There is a "tech-support" channel where you can post a request at any time.

When the TechChatTV show is recording live you can also go to the "live-show-call-request" channel if you would like to speak directly with the host about your tech support issue.