Wifi connection, wrong password
I have a smartphone Huawei Y6 2018 and since around one week it does not connect anymore to the Wifi of my box, it says wrong password. That is not true other devices can connect with the same password. I tried to rested, my box, the smartphone, forget the network and as a last resort I reinitialized the smartphone to the original configuration, it did not wok and I am in trouble now. I would like to know what could cause this problem and if the smartphone is definitely concerning WiFi. A strange thing is it can still connect to free WiFi. I precise I have checked if some MAC address were blocked, but no there is no block coming from my box.
Thank you for your answers.