Deco app no longer able to "find deco" after IP range change
I have configured a Deco mesh with 4 devices to give full coverage to my home. I have configured it using Access Point mode.
Initially, the main router was setup with the 192.168.1.x range, and everything worked fine and I was able to use the Deco app on my phone.
Due to some specific configuration requirements I had to change my network IP range to 10.21.172.x, to which the mesh responded fine. Everything kept working fine after the change. Everything... but the app.
When I try to use the app, it just shows a message stating:
"We couldn't find Deco.
Something went wrong with the Cloud service. Please try again.
If you are still unsuccessful after several attempts, connect to your Deco's Wi-Fi network and then try again."
I am connected to my Deco's Wi-Fi and I still get the same message every time. After tapping "try again" just I get a vanishing message stating "Couldn't connect to this Deco network."
I have tried all the bullet points presented on the help section, including reinstalling the app.
So, my question is... is there any way to restore access to the app without resetting the entire mesh and reconfigure it all from scratch?