Currently, when logging into the admin interface as the agency or SAAS user admin, it is not mobile responsive AT ALL. While there is a mobile app, that doesn't allow you to do everything you can in the admin area.
More than 50% of web traffic is done via mobile, so making the admin area mobile responsive is a MUST HAVE. It looks terrible when SAAS customers are trying to make a quick billing update because of a declined card but can not do that from their phone, but rather have to go get their laptop or desktop computer to make a simple billing change, or to add a new user, or literally any of the things that can only be done on the desktop version of the admin area.