If you're still unable to add your logo, I recommend calling in to speak with a member of the Support Team. This problem may be related to a known issue. The engineers have been made aware and are diligently working to get it resolved. An agent will be able to get you added to the list of affected companies. Once you're added, you'll then receive email notifications regarding the resolution. The number to speak with an agent is 1-800-488-7330. The most up-to-date contact information can be found here: https://help.quickbooks.intuit.com/en_US/contact. You may want to mention to the agent that you believe this problem could be connected to investigation #23652.
Please feel free to leave a comment below and let me know how the conversation goes. I'll be here to help in any way that I can.