I use your module on M2.3.3 and it works like a charm. However, after upgrading the site to Magento 2.4, an error appeared when importing:
Notice: Trying to access offset on value of type null in ... on line 843
How to fix it?
To resolve this issue, please edit the file app/code/Bss/ProductAttributesImportExport/Model/Import/ProductAttributes.php
If you have any other question or concern, please feel free to contact us. We'd be happy to support!