wifi cannot be acquired. Please restart the phone

HI, I am trying to set up my mi Led smart Bulb (white and Color)
unfortunately when trying to connect to my wifi through the mi home app it cannot find the wifi.
I am using 2.4GHz Wifi router and have restarted both the wifi and the phone, as well as setting the light bulb correctly (turning on/of 5 times). is there any way how to correct this error? or how can I fix it?
thank you in advance

do you have your phone set to discover new wifi?