As FatnSlo mentioned, he got a reply in about 10 hours.
Just like many other miners that contacted us regarding this issue via our only official support channel:
https://support.slushpool.com/Wow. "Many" miners, you say?
Just wondering why it's the miners that are obligated to contact
you and tell
you that
your pool isn't functioning,
... rather than
you posting on
your site that
you detected
your pool was not working correctly for
your miners and
you were already working on a fix to
your problem.
That's a difference with a distinction.