I have something like that and I had change back to original 1 hour version.

If I change interval to 15 min for example, first it work well but after a while it stop updating and show only old data.

Then I don't know what to do 

Maybe it's something with Stratum Proxy or maybe not, I don't know exactly what Stratum Proxy is, it's new thing to me.

rMPndbzkgBaa3MkQ8wXiU1JwwSJRzTgFvD

litecoinpool.org works for me.

I think it's just censored (I see white mark near username).

Actually I have same problem now, earlier (like yesterday or day before it) everything work. Now I get something errors.

I tell if I found something how to fix it

Try change port to 8322.

Try btcjam.com. It's P2P Bitcoin lending website.

I tried resetting my password and I got email so no problem whit it. Are you sure you write your email address correct?

"Milli Bitcoin" sounds good to me.

Are you using mining pool or solo mining? Solo is not profitable with graphics card.

If you use pool I don't know whats wrong. Normally if something in setup is wrong and you try mining with pool you get error message like "Couldn't connect to server" or something like that.