Hi there. I want to apply for as a job at Blizzard, but in the option add resume i click to choose something and pop up something that have no sense and is not related to the supposed options. To make my self clear i will let you a screenshot about this. Thanks for your time.
https://ibb.co/qgh1dx6
It looks like it’s giving you three options to submit your resume - either as a file, through Dropbox, or LinkedIn. If you have it as an actual file, just click on File and it’ll let you submit your file.
The pop-up is to give you an option of where you will be providing the file from. If you have the file on Dropbox, you can click that and select your file.
If you’re uploading your file from your PC, then you would click on the “File” option. That’ll open the normal windows explorer form that you’re probably use to seeing.
Thanks! 
Hope it goes well! 
Good luck!