Hello, 

To you update your config file, 

Firstly login to your Odoo.sh then you will get multiple options like History, SHELL, Editor. Then here you need to click on the SHELL tab.

https://prnt.sc/rs5le2  

Then you will get a shell access of Odoo.sh. So in order to get your config file you can go through the below path,

"/home/odoo/.config/odoo/odoo.conf"

You can also refer to the screenshot,

https://prnt.sc/rs5mn3

Then inside the config file you can make your required changes

Thanks

Anisha Bahukhandi