Okay, I'm heading into work soon but if you're trying to connect to the bridge I assume you're plugged directly into it with a Cat 5 cable. Since it's not serving DHCP you'll need to set a static IP on your computer, something like 192.168.0.202 with the same subnet mask you used for the bridge. If none of this makes sense you can do a "factory reset" on the device and start from scratch, this may be best since you've done a bunch of things to troubleshoot and you may not be sure exactly where you're at.
This stuff isn't too complicated, just frustrating since you can't see exactly what's going on. You will figure it out eventually, just hopefully before you decided to rent the mini backhoe and start trenching.
Contact RadioLabs support for help with the factory reset, they should want to get you up and running....
John