Hello,
I can't log in with my username and password, nor can I use the code because it doesn't generate anything. Another question: is there a fee for this service?

Hi there please try again, it was a temporary issue.

You get a free 7-day trial then you can upgrade for $7 per month:
https://www.mixo.dj/pricing

Thanks for the reply! Can you import all the playlists or one at a time? (Rekordbox to Traktor)

During the trial you can only do 1 but when you upgrade it’s unlimited.

Everything works perfectly, thanks! Last question: I'd like to upload some folders to the cloud.
Can I do that or should I upload the entire library?
With 15 GB, it's a bit difficult :-D

When you connect your cloud storage, MIXO automatically uploads all of your tracks. However, you can click Cancel Upload from the Import/Progress page and then manually select the tracks you want to upload later.

You can manually upload by right-clicking a playlist or selecting tracks and right-clicking, then choose Upload Tracks.