Can't Save Proxy Settings Changes

[philiport]

Still have greyed out Save button after entering instructed proxy settings. Doesn't matter in what order the boxed are filled as per the suggested fix. I can't save the changes. Running 4.1.2 on a Galaxy S2.

[Istar]

I have the same problem. I have always the msg "waiting for traffic on port 2020". Adblocks advise on my Samsung tab 2 (Android) is : to change the port manually to localhost 2020. I did that but I can't save the changes I dont like to see the error msg all the time and my other messages dont come through!

[todsakan]

Same here.
the things I'm changing are:
show advanced options
proxy settings: manual
proxy hostname: localhost (I also tried 127.0.0.1)
proxy port: 2020 (as It is the one that appears in adblock notification)
ip settings: dhcp (unmodified)

Can't save changes at this point 'cos the save button is not enabled.
Any tip?