found the problem and things are weirder than before
I tried to use a phone with a different provider and... it worked fine!!
so the problem is my provider or more likely my router
but I never touched any settings nor I've messed with firewall
any ideas?
oh I know that probably no one mind that but... now moridb works again ^_^''
don't know what happened but it works again with both my internet providers and all the browsers
yay!!!