Hi, I am trying Let’s Encrypt for the first time via Virtualmin. But the development website which is using woocommerce has some error with the payment gateway. They asked me to whitelist their IP address and I added it but still has an unknown error. They suspect it’s the SSL cert that’s causing this.
Is it the firewall thing that I misconfigure?
Thanks for your help.
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My domain is: https://jajananindo.com
I ran this command: Woocommerce check out page
It produced this output: Invalid response
My operating system is (include version): Ubuntu 16.04
My web server is (include version): PHP 7.0
My hosting provider, if applicable, is: Vultr
I can login to a root shell on my machine (yes or no, or I don’t know): yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): Virtualmin