Whenever I someone says "It didn't work until I turned off #IPv6", I hear "It didn't work until I replaced the fuse with a paperclip." Sure, it turned on, but there's something else amiss in your system that needs to be addressed.
They've been noncommittal about it every time I've asked, and considering they just went through a bankruptcy I don't have my hopes up.
Their fiber network is still pretty solid or I'd have switched off them by now.
I have IPv6 shut off on the router here because you can't (easily) disable it on individual devices like "smart" TVs, streaming dongles, etc.
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