the lines
SetupIconFile={localappdata}\Bisq.ico
UninstallDisplayIcon={localappdata}\Bisq.ico
are wrong, Bisq folder is located in {localappdata} and the icons are inside Bisq\ path so a more coherent change would be
SetupIconFile={localappdata}\Bisq\Bisq.ico
UninstallDisplayIcon={localappdata}\Bisq\Bisq.ico
but even this would be wrong since SetupIconFiledirective as it is used on compile time only and should contain the absolute path to the icon
Same issue on `WizardSmallImageFile={localappdata}\Bisq-setup-icon.bmp `