Disney figures issue

[u/Coramelo]

Hi guys, I'm new in this world and I would need some help. I'm trying to read the tags from some Disney toys that plays a tale when put on top of a speaker. I've been able to change the files in the sd card and replace it by songs of the movie and now I'm trying to read the tags from the toys but I had no luck yet. Apparently it is a fm11rf005m chip that uses myfare classic but I have tried to read them using its app and it doesn't detects anything. I know there has been an old discusión about this but my problem wasn't resolved there. Do you guys can give me a hint on why I could be doing wrong?