Freemius integration

Hi There,
We have been trying to use freemius for our WordPress theme and it is not being approved by theme checker. I am getting these errors while trying to submit.

WARNING: Found ><?php echo esc_attr( in subscription-cancellation.php. Only use esc_attr() inside HTML attributes. Use esc_html() between HTML tags. A manual review is needed.
Line 136: + '		    <h4><?php echo esc_attr( sprintf( fs_text_inline( 'Cancel %s?', 'cancel-x', $s
REQUIRED: Both DOS and UNIX style line endings were found in the file user-change.php. This causes a problem with SVN repositories and must be corrected before the theme can be accepted. Please change the file to use only one style of line endings.
REQUIRED: Both DOS and UNIX style line endings were found in the file license-activation.php. This causes a problem with SVN repositories and must be corrected before the theme can be accepted. Please change the file to use only one style of line endings.
REQUIRED: Both DOS and UNIX style line endings were found in the file data-debug-mode.php. This causes a problem with SVN repositories and must be corrected before the theme can be accepted. Please change the file to use only one style of line endings.
REQUIRED: wp_get_sites() found in the file class-freemius.php. Deprecated since version 4.6. Use get_sites instead.