If you are using a customized Header or Home Screen on your Pepperi B2B Storefront for your buyers -  you'll need to disable the WebApp Main bar header files for the Admin profile in order to enable Admin users to access the Settings on the web app (app.pepperi.com),

Go to app.pepperi.com -> Company Profile --> WebApp Main Bar

Add an Admin Profile configuration.

Do not add any fields to the configuration, save it empty.

The Admin user will now have the out of the box header on the Web App and will be able to access the Settings icon.