PHP7 issues

Hi, I want to upgrade my server to PHP7 and am getting lots of errors relating to eBook Store when I run the site through WP Engine’s PHP7 compatibility checker. Please could you provide a fix:

FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/fpdi/fpdf.php
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FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
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76 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
1055 | ERROR | Function set_magic_quotes_runtime() is deprecated since PHP 5.3 and removed since PHP 7.0
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FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/includes/fpdi/filters/FilterLZW.php
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FOUND 1 ERROR AFFECTING 1 LINE
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147 | ERROR | Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0
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FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/includes/fpdi/filters/FilterLZW_FPDI.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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26 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
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FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/includes/fpdi/filters/FilterASCII85_FPDI.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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26 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
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FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/includes/fpdi/fpdi_pdf_parser.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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69 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
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FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/includes/fpdi/pdf_parser.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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101 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
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FILE: /nas/content/live/kulindaltd/wp-content/plugins/ebook-store/includes/fpdi/pdf_context.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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40 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
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Many thanks