I bought 1 code at first. I tried it out and bought 3 more codes. And today the last one and I have the full pot. :)
I use with OBS, Larix and Restream.io everything works great.
One time while multistreaming a 4 hour conference, 1 stream on Youtube got disconnected, it could be related to the internet connection because the bandwidth dropped dramatically for a while, but the other 4 facebook channels streamed without a problem.
It is possible to attach a logo to the stream but you have to write to the support. It should be a standard option.