Indeed I have found a bug, and it is reported else where (reddit turned up after a google). What I hadn't noticed is that all the lights are just flashing red. I had to physically quit the game and restart to fix it. This game is actually really good at using the Xbox re-store function - unfortunately that makes it a little buggy too.Unless you've found a bug I've not seen anyone else mention I'm going to assume this is user error I'm afraid.
I found out why this was too. Apparently if you have your phone out the Coin Runs are locked. So you have to put your phone away (X on XBox), make sure there are no other prompts on screen (including the 'online match prompts') and then they are unlocked. Completely bizarre. No indication at all that is the case and isn't in the slightest consistent with anything else!Not sure, I didn't try these until fairly late in the campaign and they're working fine for me
Also, this game is buggy as hell. I was trying to do a privacy invasion last night and got invaded by a fixer after I hacked the second ctOS access box to enable it. So I deal with the invader, come back to finish the privacy invasion and the PI box is still locked. The second access box now has a white line coming out of it but it cannot be hacked again. So now I can't complete that PI. Hopefully it will have reset again when I go back to it. There are quite a few glitchy bugs like this


