AdobeSign Mobile App for iOS (iPhones) opens the browser dashboard instead of the mobile app?

The AdobeSign Mobile App for iOS has recently started opening the browser dashboard, instead of the mobile app. This is causing our business to have issues as we cannot use the full functionality of AdobeSign from our mobile devices when out seeing clients.

I contacted the AdobeSign support team via the online chat, and had over an hour of my time completely wasted as they could not comprehend the above two sentences.

Have uninstalled and reinstalled the mobile app, turned my Iphone off and then back on, and am using the latest AdobeSign version 3.26.0.

Is anybody else having this issue?