Brian from Backblaze here. We are aware of the sslabs flagged issues and we're working to keep on top of it. Sometimes these issues apply to Backblaze and we are vulnerable for a short time (like when HeartBleed came out we had to scramble to plug it as fast as humanly possible). But most of the time when we are slightly slow it is because it doesn't REALLY affect our customers or us.
Keep checking back, I swear you will see improvement over the next week.