Hello  @xlemassacre 

Thank you very much for the inquiry, Most Tapo camera are ONVIF Profile S complaint.As the ONVIF Overview (see https://www.onvif.org/profiles/)  the Motion detection is not supported in ONVIF Profile S. It is supported in ONVIF Profile T

Hope this answers your question. There is similar feedback on the Tapo feature request board for ONVIF profile T, you may vote or start a request there.