What is it about wifi protocols that makes security different in this way:
I changed router the other day, the same model and brand it's just that the old tplink router dies after 20 or so days. So I got a replacement, gave it the same said and we pwd and ready! My esp based devices all reconnected and kept posting data without issue.
But my laptops didn't, I had to re enter the password and then it worked. Why?