In order to send us Voxlog files you must first compress/zip the files and then send the zip/compressed file to us. Below is a small tutorial of how to accomplish that as demonstrated on a PC.
https://videoplustranscriptionserviceskimfess.sharefile.com/d-sfb53d5e595cf492d94cee11b8fd7d025
Want a quick reference, see the attachment below.