Reply to comment:

Andreas Strikos
Hi Sebastian, the normal behavior of the credit system is described here https://atlas.ripe.net/doc/udm#credit-system. But since this feature is fairly new we might have missed something. Could you send the details of your case in atlas-dev@ripe.net and we will further investigate it. In general, the current limits are extremely conservative in order to protect RIPE Atlas from overload, particularly by fat fingers. If you have gained experience and wish to do specific things, send us a short mail to the above address describing what you want to do and we will raise your limits accordingly. In any case, please do not forget to mention your RIPE NCC access user name if it is different from the mail address you will send the emails. Regards, Andreas