How do RRL authors earn money
Well, you can direct your readers to a button called "Donations" at the top of each chapter. And if you have a patreon account you can also tell them about it.
But an actual steady paying gig? No, there is nothing like that in RRL. I guess you already visited webnovel. We have a completely different model and philosophy here.
Authors on RRL can take donations on PayPal or Patreon. RRL does not take any portion of those. We let authors keep everything for themselves.
As to how RRL gets money, we have our own Premium service, and we have ads that pay for a large majority of our costs of operation.