Hello there.
Someone have guide to change hostname on jitsi?
How did you deploy it?
This is guide of install
HOnestly, the simplest is to backup the config, reinstall and re-apply your config.js on top, then update the domain in config.js.
idk why, but after reinstall something going wrong, because i have good connection on PC, but i can’t connect from mobile browser, or mobile app, btw if i forward back to backup anything good.
I’m breaking my head like 10 days i think 
Maybe u have some guide how to reinstall it right?