I use Magento 2 Import to update products data. Products are sold on various marketplaces and some data is not being observed by M2E PRO hence it does not trigger the update. I need you to use Programmatic Possibilities to work with the extension. Link below for your reference: https://docs.m2epro.com/display/BestPracticeMagento2/Suitable+Articles+
I have 2 magento extensions that need to be installed via composer. The following extensions need to be installed: - Mailchimp - mPDF I'd be happy to explain if you have specific questions.