I do have an account on RNA World with the proper email/username/pwd. Yet, when I use Sign-up for projects, and click on Find Account icon, I get Project Down. However, project website is up right now, and I can login to my account.

Interestingly, Status Schedulers list thinks RNA World is offline with plenty of work available, while it is not. Also, http://www.rnaworld.de/rnaworld/server_status.php?xml=1 returns a valid XML file, but also says that it has just 1 task to send out for 37 active of total 5446 users; definitely not deserving of the green dot in the Status Schedulers entry.

So, something is wrong with BAM!'s communication with RNA World.

Same problem as with YoYo, the project actively rejects connections from BOINCstats to the scheduler.

Is that also the reason why I can't use Sign-up For Projects and Find Account? I was able to add YoYo to My Projects via BAM! even though it shares this problem with RNA World. So, how come I cannot add RNA World, independent of how it looks in the Status Schedulers list?

And, did you contact anyone from "Rechenkraft" to alert them to this situation, since they seem to be hosting both RNA and YoYo?

I contacted Yoyo.

Fixed.