Hi @yakito,
I think there might be two separate problems here unfortunately:
- n8n did have a bug, causing the download of files to fail on some browsers. Perhaps you can upgrade to a more recent version as described here and confirm if the issue still persists?
- As for the lost connection this might be a problem caused by the amount of data processed. This problem type is discussed here in our docs. I will be out for a while but both @Jon and @marcus are here during my absence in case you need help with implementing any of the suggestions in your workflow.