Compatible with Magento 2.2.8?

[rolandmd]

Hi, we recently upgraded our Magento to 2.2.8
Since this upgrade the importer stopped working. I created the correct .csv file (utf encoding, header with column names correct etc.) but at the step 'Check data' the following message appears: Sorry, but the data is invalid or the file is not uploaded
I'm not sure if this has something to do with our upgrade (directory to where files are uploaded is missing or moved?) or with the compatibility of the import extension.
I hope you can look into this. Thanks in advance
Regards,
Roland

[rolandmd]

Hi, is there any news on this open issue? Please let me know if you need any more information and/or screenshots?