Re configure problem

hello
i recently lost my router in an firmware update. also lost all the settings.
i got new router. and also changed ssid&password, and local ip class. [from 10.0 to 192.168]
now to hass.io.

i managed to change ssid. and it works. i know that because i have pi-hole module that is accesible at [reserved] new ip.
but i can’t acces anything else.

the setup is hassio + changed default ip + https with let’s encrypt + domain provided by host that reaches my external dynamic ip +
the base url line in config is:
base_url: https://xxx.go.ro:8181

so whats the correct forwarding scheme for reaching HA ? also for certificate renewal ?

thank you