Xiaomi Mi Smart power plug Chuangmi Plug V1

Hello everybody
I have 10 Smart wifi power plug Xiaomi Chuangmi Plug V1 bought in china 4 yers ago
5 are installed from long time and working well in Mi Home, from now starting Home assistant project, i can retreive boxkey of tht 5 devices
and get them to work in HA.
My problem is the 5 other, impossible to link to Mi-home, all the process seem to be ok , the power plug get ip adress from my DHCP, blink from yellow to fixed blue,
but get error messages connection timeout after 100%…
i’m link to china server, i have try many many mi-home version also.
Any idea ?
Or is there a way to link that power plug to IO without first connection to Mi Home ?
Thk you…