According to the Graphtreon dashboard, a page linked to Patreon where I can see all my payments (just the amount, not the time), I've paid $8.
I believe this happens right at the beginning when you choose the tier, and then you get paid when you publish.
Anyway, the amount is really small for the work you've done so far.
I can send you a screenshot via PM, as there's more information there.
Nevertheless, thank you for your work and your efforts to keep the game bug-free according to the bugs reported.