I can't access to {domain}/blog (wordpress) but SSH works fine

My YunoHost server

Hardware: Raspberry Pi at home
YunoHost version: 4.1.7.2 (testing).
I have access to my server : Through SSH and through the webadmin
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no
If yes, please explain:

Description of my issue

I dealt with YNH stuff in the past but it should be irrelevant now because I’m using a brand new microSD card with brand new installation with only Yunohost+wordpress and different router that should allow everything.

Yet webadmin (https://yunohost.local/yunohost/admin/#/) and SSH work fine but {my local domain}/blog (this time it’s https://aljafe.nohost.me/blog) doesn’t. And I’m going crazy.

Context:
I installed YH a while ago in a different microSD and modified the router with the idea of having 2 domains: one personal, one for business. But there was a problem: my router didn’t allow me to open the port 80. Now I’m trying with a different router but still nothing.

Does the diagnosis report any related issue ?

It says ports 22, 80, 443, 587, 993, 5222 and 5269 are inaccessible but I have no idea of why

So did you configure port forwarding…

I configured the port 443 and port 22 is supposed to be working since I use it for SSH and FileZilla :\