@bartho The Opera Mini browser may not sync with your phone's file manager for paused or archived downloads. Try clearing the browser cache or re-adding the files manually by starting the download again from the original source.
@leocg Thank you for this! I thought I was losing my mind. Just as the original poster stated, there was simply no activity after clicking subsequent download links. I enabled automatic downloads and all is well.
I am new user of Opera browser and I love it, but I really missing this feature that is available for all other browsers I have been using. It will be great if it can be added at some point.