If you’re in Malaysia and so happened you had similar problem with mine, ie.
- Can’t access to certain websites such as banks etc.
- Can’t access gmail, yahoo and other mails.
- You receive errors such as invalid ssl certificate etc.
- You receive DNS blocked message.
TRY, changing your DNS. I used Unifi and had problem accessing the whole day. To the extent, I wanted to reformat my laptop. Last resort was to change the DNS at it WORKED!
I was using (188.8.131.52 and 184.108.40.206). Now I changed it to 220.127.116.11 and 18.104.22.168
It worked for me, not sure if it works for you. Good Luck!