If you have web access, you can order the SIM though your account, but for certain results, I'd suggest that you do a chat with customer support. Get Help Online, In App, Or Through Social | Visible
I have tried the "Chat" bot, no help! I tried the Social media links, no response! I went into my account and could not find a location to order a new sim card! So no, I'm not happy with the results on this issue!