Seems to be resolved :)
If you encounter an error, please send an e-mail by clicking the "Get in touch" button

A new update has been deployed, and it is supposed to fix these issues!
I'll keep watching to see if this fixes the problems

Other issue,
Some songs are getting "This track doesn't have a Canvas" but actually have a Canvas.
Will look for a way to fix this ASAP. In the meantime, just refresh the page

The source of this issue has been found, and I'm looking for a solution

Currently investigating by running some tests

People are getting error messages such as "JSON Decode Error"
The reason is currently unknown, it will be investigated in the next days.
Try refreshing the page if you get this error.