Hi, @ash!

We have a referral program and had it enabled when we launched a couple of months ago, but we switched over to a free model with the ability to cash out, so we've had to temporarily disable the referral system. We're working on way to adequately protect against inevitable exploitation of the referral program. Once we have a workable solution, we'll re-enable it and let the community know.

At this time, we unfortunately do not have a tentative date for when that might be.