airport express and guest network

My operatign system is OS X 10.9.1

Airport Express Time capsule 1 TB

I have had my airport express time capsule for 2 years (1 TB)and it worked pretty near flawlessly since then. It started with the time capsule being too full and that got me messsing with it.

I could not fugure out how to delete files and it was not writing over old ones. I have seen the same problem on here already. (In the end I bought an external drive and now that seems to have solved it, even though I deleted a bunch of old files and my compute is now hovering around 830 MB it still won't back up on the time capsule. I am not too worried about this though. If you can help me on this part that is great. 🙂 )

Then I tried to reset my AE device. WIth that I had to reset my guest network. this is where the problems began.

Previously my AE had a steady green light and hosted two wifi names (mine and for guests).

Now if I click not bridged (?) then I can not get Internet access on the guest network. If I click DHC and Nat it constantly blinks amber but the guest network is not there (even though I set it up). I have gone back and forth with this and it is consistently behaving like I described above.

I have done a reset. I have done a reset and unplugged the machine (though I admit I did not wait two minutes, closer to 45 seconds)

I want to go back to the steady green light and the two wifis established.

Can you please help me?