To white label and change the account branding please go to Main Menu>Config>Basic
Update your brand information here -
Please leave the PWA start URL and PWA Scope fields as it is now. No need to change anything.
To replace all the logos, please go to Main Menu>Config>Assets
Replace all logos here with yours. Please find logo sizes required below -
Upload Images in PNG Format Only
Next, go to Main Menu>Config>System and replace the footer credit here with your brand name.