Add timestamp to appscript onEdit

I would like to have it that when a row is edited that it only copies the name phone and adds a timestamp of the edit on another tab in Google Sheets.

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The above is working but i cannot figure out how to get the timestamp to show. It also creates a row no matter what tab I am in and I want it to only read edits from the main.

The outcome should display the roadname, phone and then C:C should have timestamp of changed made.

I have updated the below sheet to show expected outcome

https://docs.google.com/spreadsheets...gid=1523701088

The Code will work after changes made in columns 1 and 3 on the MAIN page. I don't know English, I wrote with translate.

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