How do I set my badge counter?

At the moment, I am on day 183 no fap. I click on the blue box that reads, "Add or update day counter badge". It brings me to a screen that reads, "No Reddit badge synced yet. No streak logged yet."

So I click on "Pick date" and I scroll back to December 30th, 2017. I click on the 30th, ignore the time, because it reads, "Optional" click "Submit" and I get the same message every single time: "Something went wrong" and there are two rotating arrows in an orange box at the bottom, as if something is loading or buffering. But nothing ever happens.

I've entered a time in, I've left the window open for an hour. Nothing makes a difference. Is there something I'm doing wrong? How can I set my badge counter for December 30th, 2017, so that I'll get the correct days? Any help would be very appreciated.