RE: License check response returned NULL.
That error will occur when your site is unable to communicate with mine. There is nothing to worry about as that usually resolves itself.
RE: It is showing this for both the c-map licence and the import plugin. Neither are working???
License activation status does not prevent cMap or the CSV Import from functioning. The only limitation placed in the ability to receive in admin updates as they are released.
RE: so I’ve chosen the csv file to import, clicked MAP, tied up all the fields which the system automatically assigned correctly. I clicked import and it seemed to be working and said 100% complete, however none of the customers are showing???
Where are they not showing? The admin, the frontend, both? If you imported an export from another site, I expect you ran into this, covered in the Why is nothing being imported? FAQ.
So, you can either not the
Entry ID column when mapping the fields or install the beta version I reference in this reply.
Hope this helps!