I set up an issue tracker for a software I'm developing for a company. Sent them an invitation to that tracker, stating that I hope to keep discussions more concise and clear that way (they're all HW/Embedded Devs)

The good news is: they've taken to the tracker quite well and are happily reporting issues and discussing them.

The bad news is: they're all sharing a single account.

It's been up for a day now and already no one knows anymore who reported/commented what.

WHY, JUST WHY would you think it's a good idea to share an account between 5 people, maybe more, who knows? Creating one takes less than a minute and it's free ffs.