Question posted in 
So my wordpress site domain is from Godaddy, and hosted in a hong kong server, as our target users are mainly from hong kong. When i wish to improve SEO and started submitting backlink to directory sites, i always get the error message of “The URL could not be validated. Either the page does not exist or the server cound not be contacted.”
I have read from another platform that someone commented: You’re getting the error because you’re using an SSL that belongs to someone else. When these directories attempt to verify your site using the “https”, they get a warning that says your site is potentially harmful and the third party SSL is the reason given. My suggestion would be to buy an SSL directly from your web host or from a reputable SSL company.”
But unfortunately, i can’t ensure if this is the right direction and how can i do that.
Could someone teach me please? By the way my website link is , hopefully you can find some clues with the link. Thanks in advance.
https://www.bananaportal.com/
3
Answers
The issue relates to esoteric web browsers, you can read more on it here: https://community.letsencrypt.org/t/some-browser-say-certificate-is-not-trusted/28766
It is also important to mention, that your current certificate is doing perfect on encryption, but the authentication is the simplest and cheapest (free) possible. You’ve never showed any legal document that prove your claimed identity, in order to receive the certificate.
You can be more impressive with a Verisign payed certificate.
Have you tries https://easyengine.io/docs/lets-encrypt/
Most trusted and almost free SSL certificate for everyone to install fully Secure and trustable certificate that widely accepted in the world.
The certificate itself is fine. You can see the results of two different tests here:
https://www.sslshopper.com/ssl-checker.html#hostname=https://www.bananaportal.com/
https://www.ssllabs.com/ssltest/analyze.html?d=www.bananaportal.com
Many directory sites are unable to process https, and that might be the source of your problem. In any case, directory sites aren’t going to improve your SEO anymore.