Follow-up procedure Study participants who were randomized to the intervention group will have access to intervention in two months. Three months after recruitment to the study, study participants from both groups will get an automated email invitation to participate in the three-month follow-up. The email will include a personalized link that when clicked on will redirect the participant to follow-up page where they will be asked to once again answer questions about their cannabis and alcohol use, depression and anxiety, seeking professional help for cannabis use as well as the help of family or friends and questions about whether they have used any other internet or telephone services to reduce or quit their cannabis use. The entire follow-up procedure will be completed via the internet.