I don't know what you mean by your "main domain".
Where are you accessing the router from? From within your network, or from outside?
I have to assume from within your network, because the screenshot shows that at the time you did not have an Internet connection. It is waiting for DHCP from the modem to assign an address.
That has nothing to do with SSL.
Did you mean that you enabled SSL for the router UI?
i'm accesing the router from the outside with a no-ip domain that i bought, and i moved my names server to cloudflare so i could use their new free ssl service ( the flexible one ) https://www.cloudflare.com/ssl
Please realize what this is protecting and not protecting.
When you (or anybody) accesses your site from Starbucks, it protects them from the hacker barista who brought in a fancy managed switch that he installed in the back room so that he could steal your credit card numbers.
And from any other snooping between Starbucks and Cloudflare.
It offers no protection between Cloudflare and your server. That is unencrypted.
I don't really see the point of this.
If you just want to access your router remotely (or, for that matter, anything on your internal network) I would just use OpenVPN.
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