First release of Xen Orchestra (based on xend
, so oooold Xen API) was during summer 2009. Rewriting for XAPI is done back in 2013. It's been a bit longer than few years
Also, I can guarantee that if everybody had a similar experience than yours, nobody would have adopted our stack. I know it doesn't help you directly, but there's so many specific and external factors that can make your experience painful in your environment. There's no reason to reinstall XCP-ng, and what you think your network issue is, it's likely the pool member simply cannot joining the master.
Anyway, I hope the community will assist you as Tom started, so you can get on your feet. Thanks for keep trying, your feedback is important for us.