Thanks for writing to us.
For your first query
It seems that you have set the border-radius as 9px on the Header Bar. Please set the Header bar border-radius as 0px or OFF it.
For the 2nd query, it seems that you have set the margin and padding of the Row and column just because it is not showing properly. Please make sure you have set the same margin and padding os all the Rows and columns.
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- WordPress Login URL
- Admin level username and password
- Exact page URL
You can find the Secure Note button at the bottom of your posts