letsencrypt – Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.

letsencrypt topic about this issue: https://community.letsencrypt.org/t/solution-client-with-the-currently-selected-authenticator-does-not-support-any-combination-of-challenges-that-will-satisfy-the-ca/49983/2

This is due to a security incident with LetsEncrypt

Incident Status Security Issue
Components acme-v01.api.letsencrypt.org (Production), acme-staging.api.letsencrypt.org (Staging), acme-staging-v02.api.letsencrypt.org (Staging)
Locations High Assurance Datacenter 1, High Assurance Datacenter 2

Soundcloud changed their streaming format from 128kbps MP3 to 64kbps Opus


Soundcloud recently changed their streaming format from 128kbps MP3 to 64kbps Opus. This drastically reduces the audio quality and can introduce strange artifacts. I made & released a Chrome Extension to restore the 128kbps MP3s. Give it a try.



Source: https://genius.com/a/did-soundcloud-actually-cut-its-audio-quality-in-half