Music LED Wi-Fi controller VSS-02-2k-DMX512. List of issues. First usage.

Audio controller WORLD UNIQUEEN VSS-02-2k-DMX512:
ru.aliexpress....
www.worldunique...
www.amazon.com...
Android application (Viais-LED):
www.pgyer.com/...
Strip WU-12V-20L-60LED:
ru.aliexpress....
based on SM16703 chip
100 pixels with 3 LEDs, i.e. 300 LEDs totally.
This controller and its Android application has several critical issues:
1. Wi-Fi signal is not stable. It is dissapeared very often
2. It is not possible to play online music via 4G during Wi-Fi connection with audio controller.
3. Not always it is possible to customize colors. I'm not sure, may be it was my mistake but several times I had following problem: actual color of the LED strip doesn't match to the Android application (Viais-LED)
4. Settings is not saved in the Android application (Viais-LED). I pressed "Save" then I left the settings page, then I enter settings page again and see default settings. It is not right. Even if the settings are saved to memory of the controller actually.
5. Audio controller doesn't react to music via AUX input properly. But it reacts to microphone input only. Please watch my new video about AUX input issue: • LED Music Wi-Fi contro...
6. It is not possible to use controller without AUX cable. I need to transfer music from my smartphone to external speakers via Bluetooth or AUX cable. But everybody knows that it is not possible to tranfer music via BT when AUX cable is connected. From a reasonable point of view, it is correct that Android application analizes the spectrum of the music (audio file), then creates digital "colour spectrum" and send it to the controller via Wi-Fi without using AUX cable. It is stupid to use AUX cable because: 1) Wi-Fi connection is used already between controller and Android device; 2) I need to transfer music from my smartphone to external speakers (JBL Xtreme for example, www.jbl.com/bl... ) via Bluetooth or AUX cable. But unfortunatelly Viais-LED application doesn't analize spectrum of audio files (mp3, flac, etc). Only analog signal analizing by the VSS-02-2k controller is.
Microphone input is useless absolutely because it also records the noises and cries of dancing people.
The most critical issues is # 5.
Additional information:
Application Viais-LED doesn't work under Android 5.x
My smartphone:
Xiaomi Mi 8
Android 9, MIUI Global 10.3
Continuation:
Video #2: • LED Music Wi-Fi contro...
Video #3: • LED Music Wi-Fi contro...
Video #4: • LED Music Wi-Fi contro...