Fresh installation on Ubuntu 18.04.05 doesn't work

Yes i did setup manually 3 reverse proxies in the Apache2 machine (192.168.1.96) because that machine is exposed to internet, because in the modem/router i have port 80 forwarding to 192.168.1.96

Those 3 reverse proxies configuration to kobo instance (192.168.1.151) goes like this:
Captura de pantalla de 2021-04-16 13-05-41

Captura de pantalla de 2021-04-16 13-05-24

Captura de pantalla de 2021-04-16 13-05-11