I will provide you registered tumblr accounts with the minimum Moz metrics. Expired tumblrs are great for ranking videos or pushing links to your properties. I generally don't point them to money sites but I will when I want to use branded anchors for link diversity. They will be ready to go and registered. When you use software for posting to tumblr accounts occasionally the tumblr account will get stuck. This just means that there's a popup informing you of the next feature that you need to know about. If you go and log in and make sure to click on that popup your posting should resume as normal. This is just one of the tricks I've learned in managing a large tumblr network.