Just tried your latest version V1.19 (with connector V2.0.3), but unfortunately it did not work well
1. Categories are not visible in BO. If editing the Default/Home category, you can then see all categories listed after saving.
However not visible when just entering the Category menu in BO. Seems like a Root issue.
2. Products are not migrated at all (this worked in V1.18). Tried both with delete existing, not deleting, force/not force, from file and from direct several times.
Just do not work. After loading about 20% Products it just skips to the initial migration page - also skipping Finalizing Migration. (and cannot press the previous/Next button on the page it skips too either).
3. Customers could only be migrated separately (probably due to the faulty products migrate).
However it screwed up the customer groups, as the source Reseller and Distributor groups were not created. All customers in these groups were just migrated to Guests/Visitors (despite not even have such in source). So module could not match source and target groups correctly.
So basically do not go very well 😞