Did you change the IP address? Having problems reaching mint.bitminter.com and
www.bitminter.com.
No, nothing changed.
Not sure why you get the OCSP error at
https://bitminter.com - which browser are you using?
You are also unable to mine at mint.bitminter.com:3333 ? Everything looks normal there, including the number of active connections and users mining.
Are other sites working ok for you right now?