If you’d like to get in touch with me for any reason, your best bet is email. You can reach me at:
robert at rquinlivan dot net
You can encrypt any email at that address using my public key. I strongly recommend doing so if your inquiry is of a sensitive nature.
I’m also reachable on Telegram. If you have my phone number, you can reach me on Signal.
I also have a LinkedIn account, but I’m not as diligent in checking it as I am with the above methods.