Start eWallet, select File->Import..., then click Next
Make sure the button next to "eWallet GO!" is selected and click Next
At this point the Importer should have found your file (.wltg) and you'll see it highlighted in the text box (see image below), so click Next
Continue using the wizard, and when prompted, save the new wallet wherever you like, typically in your My Documents folder — you can use whatever name you like for the new wallet vidmate 2019 insta downloader