AFAIK their preferred way of getting support is via the support system either via the software itself (which probably won't work for you) or https://bitcoinarmory.com:8443/
I can help you with that. Building / running bitcoind won't interfere with your server. You can run it with some niceness, so other tasks get priority CPU wise. If you want prioritize the bandwith too, it gets a bit more complicated (I'm not sure if trickle works on that OS, but if it does that would be easiest). If you have a firewall installed you will need to open port 8333.