Several airlines use Verifly to review your documents pre-departure. Please note that Atlys is separate from Verifly - Atlys helps you get your visa while Verifly is a digital dropbox for your covid-related documents such as health visas, tests, and vaccination records.
Once you get your visa on Atlys, you can upload it on Verifly:
1. Download Verifly.
2. Add a Trip.
3. Select Travel Authorization
4. Upload a screenshot of the first page of your visa.
Some helpful videos that you can watch: