Need some help with appointments

I have added some appointments on my Google Calendar manually and set the API correctly on Appointments plugin, the Appointments made by Plugin goes to Gcal, but the ones that I have set manually doesn’t update on the plugin, it makes the appointment slots free instead busy,

See both Screenshots

https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/e0baaeff8e5c250edcdcecd880265026/Screen%20Shot%202562-01-06%20at%2023.03.19.png

https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/cd6dba8735ccc867080dfc38ab9f1c40/Screen%20Shot%202562-01-06%20at%2023.04.16.png

can you help me?