This happened to me once but when i got a suspicious popup window on short link saying about to Allow something and i clicked (had to) Go Back arrow from browser to go back to the gold mine to get again a short link page.

Sometimes the short link pages displays suspicious popups to download something (ADFLY) or to Allow something (click Deny is ok to receive the 5 seconds timer)

 and the captcha does not appear or the page keeps loading so me/we have to Go Back to Gold Mine to get another random short link  
I'm ok with the "Something went wrong with gold mine" because happened only once so far and it is not annoying bug
You had a short link service on bitfootball 1.0 named Ally or something, that was nice, clean, and fast loading. Can you add that service again to the random short links too ?