@matt160 

Hi,
For the reported phenomenon, we recommend sending an email to this email address with the following information for further assistance.
 

Subject: [Forum Escalation][ID 857260] Get Tapo Care Cloud Advanced to support unlimited devices
Forum Nickname: [User Provided]
Thread URL:  https://community.tp-link.com/us/smart-home/forum/topic/857260
Model&Version: [User Provided]
Description: [User Provided]
    1. A brief description of the phenomenon you experienced.
    2. Send us a picture of the message that appears after you click on "Upgrade Now" in the provided picture.
Any Other Relevant Information (Logs, Config Files, Images, etc.): [User Provided]

Once sent, a ticket will be created in our support system, and a member of the team will follow up on your case and assist you further.

Best Regards