My radio (radiomaster pocket) will not play my audio files no matter what i do.

[kazdygorylto-ai]

I tried renaming them, changing format and bitrate and bit nothing works.
armed.wav
hello.wav
swalert.wav
telemko.wav
telemok.wav
thralert.wav
I only worked on hello file. if u can make these files work i will be thankfull.
Rn any files even the original folder will not work.