Problem to play music from Amazon Music

Since last upgrade /begining of this year, 4stream application has some difficulties to play music from Amazon Music.

For example when choosing 1 album, 1st song seems to buffer for several seconds but does not play then move to the second stay on it only for 1 sec and so on for the other.
So when lucky 1 song can be played from the album otherwise end is reached without any music.

Second symptom is that if the lucky song has started it can drop in the middle.

Btw when i play music from my NAS it works perfectly.

Need help to solve this remote Amazon Music playing issue please.

I use Arylic S10 with 4stream app over wifi.