The label is in the comment form input as placeholders.
If you want it to remain visible, you can change it to be label above the inputs, which will need modification to theme codes.
Please contact our customization service via https://theme4press.com/theme-customization-service/
As for the image size.
Did you change the add_image_size code in functions.php of the theme?
Please use this plugin to regenerate your images.