@Morrisonm 

Hi,
For the reported phenomenon, we recommend sending an email to forumsupport.usa@tp-link.com with the following information for further assistance.

Subject: [Forum Escalation][ID 855490] tapo configure to h264
Forum Nickname: [User Provided]
Thread URL:  https://community.tp-link.com/us/smart-home/forum/topic/855490
Model&Version: [User Provided]
Description: [User Provided]
  1. A brief decription of the phenomenon you experienced, how you test the camera is no longer streaming in H264.
  2. The camera's MAC address. You can find it in the Tapo app > camera's Device Settings > Device Info page.

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 to assist you further.

Best Regards