There's a new message on spideroak.support: "The SpiderOak team continues to work on restoring service for our customers. We understand your frustration about the downtime and apologize for the inconvenience this creates. Once service is restored, we will send emails confirming this to all customers."

I recommend rsync.net for primary; AWS S3 (Deep Glacier, mainly) and Backblaze (B2) for secondary/tertiary.

I had used SpiderOak for years, but they are now clearly unreliable.