Hi @HelenRincon ,
It seems that the following participation link (referenced in the official blogpost) is still for private access only:
https://docs.google.com/forms/d/e/1FAIpQLSeCcU95mtr-l9NC7Ye7gCsPMe9t4JRgcb7XAUs4oKWLsSVlpA/formrestricted
Best,
Márton