I tried the new code RBCIC36C using the amazon link provided in the original post and it did not work- got the message “The promotional code you entered is not valid.”
FYI: AFAIK, the codes seem to have become invalid and AliExpress is out of stock. I will ask Wurkkos for new discount codes after CND, i.e. as of October 8, 2019.
Please have some more patience. Wurkkos is about to replenish stock on Amazon and AliExpress. Once that's happened, I will be happy to post a new groupbuy discount. :-)
Update October 14, 2019: Wurkkos sent me new codes for Amazon DE and Amazon US today. They will soon be active and posted by me in the OP.
got mine today, wow expedited delivery from amazon was very fast.
Quick impressions of light, very cool indeed i like the red very bright ,same for UV and the samsung emitter is very nice too, i wish more will use this neutral emitter.
Nice deal indeed, the included battery should give good runtimes if stated 5000mah is true. This will be a cool light to use now