As with many, it took quite a while for me to receive the stick. Due to lack of time and other priorities, the stick remained unused for a few months after which I used it for Domoticz with Zigbee2MQTT.
After a few months the stick stopped working and I checked the stick through the maker's website. The message appeared that there was a defect and that I should contact the developer.
I tried that several times, but there is no response from the developer. Fortunately, I live near Germany, because if there is no response and no support, I will report it as a scammer.
For the time being I would advise everyone not to do business with this seller!

Good solder joints. Good reception. Flawlessly works 24/7 since more then 6 months now. Tested with iobroker. Now using it with zigbee2mqtt.

I would be lying if I said that the perturbations with this purchase did not make me afraid. Orders placed at the beginning of December, info on the items page about fast shipping, and after a week, without changing the status. Additionally, comments about the scam are starting to appear. There is also no reply to the sent message. After 10 days, the parcel number appears but it is still not visible in the DHL system. Finally, an email arrives from the developer who highlights the problems and apologizes for the delays. The package also starts trip a few days later and arrives just before Christmas. And inside, a little surprise in the form of a pack of Haribo bears. My assessments show that this bribe worked :P

Work perfectly with zigbee2mqtt. The zigbee communication is a lot more stable now.
I am very satisfied with this stick. Would highly recommend this to anyone using Homeassistant with Zigbee. Many thanks!

First thing first, this coordinator is awesome. Slaesh did a great job and the community did clearly recognize his work.
He faced really bad stock and shipping issues that could have take down his project but he took several times the initiative to reach his clients to check, gave them explanations and options.
So on my end, communication was great and if you are not in a rush and could wait a couple of weeks, don't hesitate.
Else, lower your expectations or try to buy other coordinators but between stock issues and shipment issues all over the world in these COVID times, good luck !

- End of August: When I did order it, I knew there were stock issues, some shipping were not honored in time and that communication was not the best but I was willing to support the initiative and was not in a rush.
- Beginning of September: Got a first email from Tindie stating that my order has been shipped and got two days after an email from Slaesh explaining shipping and communications issues.
- End of September: Got a second email from Slaesh with more detailed explanation about his situation with DHL and all.
- Mid-october: Slaesh did contact all North-American buyers directly to check if we did successfully received it or not as some people did and others were still waiting. Due to the delay, he tooks kindly the initiative to propose to resend or to refund. So I did answer him that after 6 weeks, I was now sure that it has been either lost or returned and that I would like a resend with tracking.
- End of October: Got another email from Tindie stating that my order has been shipped with tracking but tracking link was defective so send Slaesh an email and he did answer me within two days. Tracking worked great until it reached destination country.
- Beginning of November: Did receive the key and it's working great, yay !

I did a donation to Sascha couple of weeks later as I know it can be rough to run a small growing business like this and wanted to support him.

Thanks again Slaesh and keep up the good work !