If your unit does not have an LRT subscription, and you want to purchase it with a credit card, or you have purchased an annual plan via license key from a reseller, here is how you can either purchase LRT via credit card or claim your license key you previously purchased:
1. Power the unit on, and connect it to the internet. This doesn't have to be via your usual method of connectivity (in other words you don't need to use your modems - any WiFi or LAN will do just for this step)
2. Log into https://solo.liveu.tv, on the dashboard you should see a section labeled LRT:
3. Click Add LRT in order to purchase LRT via credit card, or claim your license key (note, license keys start with "LRT_").
The next screens will walk you through that process!