ERR_CONNECTION_CLOSED when a direct download url via QR Code

[blueli]

Why the direct download url via a QR code won't work?

Hi I want to create a QR code for photos when user scan it they are able to see and download the image to their phone. However if I scan the below QR Code with my iPhone,

https://api.qrserver.com/v1/create-qr-code/?format=jpg&size=350x350&data=https://dl.dropboxuserconte...

The Chrome returns 

This site can’t be reached

dl.dropboxusercontent.com unexpectedly closed the connection.
Try:
Checking the connection

ERR_CONNECTION_CLOSED. 

But if I copy and paste the URL, and it works without problem.

https://dl.dropboxusercontent.com/s/lrz52onl2z3u8zo/857962_10152607921160191_288815580_o_10152607921...

Any idea why that happens? 

Thanks

[Nancy]

Hi @blueli, and thanks for posting on our forum!

Can you please describe to me the exact steps that you took in order to generate this QR code? Did you use any kind of third-party program/app in order to do this?

Let me know, and we’ll take it from there.