The logos of the different Scellius payment methods can be modified. These logos appear when the buyer chooses a payment method:

To change the logo:
Sign in to the FTP of your web server.
Go to the wp-commerce/plugins/woo-scellius-payment/assets/images/ directory.
Replace the image you would like to modify while respecting the file name:
scellius.png corresponds to the Standard payment configuration.
scelliusmulti.png corresponds to the configuration payment in installments.
franfinance.png corresponds to the Franfinance configuration.
other.png corresponds to the Other payment methods configuration if the Group payment methods feature is selected.