API Auth impossible

Hello,

I recently switched from spotify to deezer and used a platform (tunemymusic) to transfer my playlistls.
The problem being that the transfer app did not add it in the proper order, instead of doing a first in first out (the oldest musics are the first to get in the deezer playlist) they do a last in first out. Because of this i wanted to write a very simple python script to be able to sort everything properly (unliking everything and reliking everything but in the proper order) so that when i like new musics it gets after the latest musics i had. 

Now the problem is that from what i saw online deezer API is (?) no longer maintained and therefore it is (?) the reason that it is not possible to create an app anymore (which is necessarey to get Oauth & then be able to do actions on the playlist).

So, my question is, is there a workaround to this or is the only way to build around deezer to scrap ?