Okay! I'm back. My first issue is completely solved! The second thing I was okay with until this part of your explanation: "Then default var_kps_new_mc_name anywhere, just so anything, or an empty string, then after they have chosen the name just run $ var_kps_new_mc_name = their_chosen_name"
Does the first half mean that I run this: $ var_kps_new_mc_name = "default"
The second half with this command: $ var_kps_new_mc_name = their_chosen_name - do I type that exactly?
And (I'm so sorry) an additional thing, how do I force the phone icon to stay accessible in the corner? I currently cannot access it outside of forcing the phone open for conversations