FlyingDesertRat

Guys, I have read the posts in here and tried all kinds of stuff but recently, my hosted server has become invisible. It worked fine one day and not the next. ive opened firewall to allow apps etc...I cant login into my router and dont know how I would find that login info. I have IP and a port visible when creating the server but no one can see me or join via IP. What the hell could be stopping me from hosting suddenly???? Its making me crazy!