Daemon failing to start: bind() failed on

If you're seeing errors when you're trying to start Sphinx that say "bind() failed on", this means that some other process is using the port you've been assigned to - a rare occurrence, but sadly not rare enough. You should contact support so they can remove the rogue process.

If this has cropped up after changing plans, I'd recommend changing back to your old plan so you don't have too much downtime with the search daemon - and hassle support too.