Login Troubles :/

Still doesn't work.
I use standard dynamic IP.

I just discovered something interesting..
I have been connected to the internet by cable. I am able to login with a wireless connection but when i go back to cable connection i am still blocked.

I would still like it fixed tho.

Because your router did not give you a new IP, yet? Turn it off and turn it on again, after waiting minute.

That didn't fix it either..

Everything works perfectly now
I was using some feature from the internet provider where i could enter my MAC-address and never have to log in again.
I turned the feature off and restarted router and pc and BAM it worked! Thank u for the support