I tried the e-control app and it doesn’t work well with latest version of android it was lagging and crashed while learning codes.
I just installed the IHC (Intelligent Home Center) app for android, and tried it now. I can confirm that it is working inside the app and the app can learn codes and the codes work inside the app. It took me 3 goes to learn a code that worked reliably.
It’s important to do the learn frequency first (press and hold) then when you learn the code do a very very brief tap on the remote, as brief as possible. Sometimes it takes a couple of goes to get it learn the correct code. If it doesn’t work cancel out then learn the frequency again (long hold) then learn the code (brief tap).
This is an alternative method (link below), however this method didn’t work for me personally.