File Request Link issues on MOBILE devices

Hello

I created a file request link and sent it to a 3rd party (and then to me to test)

When you click the link on a mobile device, you have the option to upload a file and it works perfectly

However, after the first upload you get a message saying "Thanks your file was sent" and an  "upload more" link....

The "upload more" link does not work on either iOS or Android.

(it does work in Windows or MAcbook)

Any ideas?