These URLs will stay constant for new sessions, even if the database is recreated.
These URLs contain the labels, so participants don't have to enter their label manually.
Here is the room-wide URL anyone can use. Users will be prompted to enter their participant label, which will be validated against your participant_label_file.
http://postsurvey.cp.proxy.wiim.rocks/room/econ101
Generally, you should provide your participants with the room-wide URL above. But in special cases where you need to open (or re-open) a specific participant's link, by using the participant code, you can use the below links.