A excel vba to update data

Job ID: 34003306

Budget: $10 – $30 USD

Hi i need a vba to excel.

I have many data with format column email and column password
Every time i change a password i have to go to excel manually and change every password row belonging the específic email.

1- when i update my system pass it gives me formatted email:pass. I need to make it automatically. I upload it on excel and it changes every row (password) for me.

2- i need a buttom to download back all rows to format email:pass in txt.