(1) a treatment group that immediately receives two-month access to Covivio and may also use care-as-usual (CAU), (2) an active control group that also immediately receives a two-month access to Relaxio, an internet program with the focus of stress relaxation ,and may also additionally use CAU or (3) a control group, in which they may engage with any diabetes treatment (i.e. CAU/ wait list control group). The active control group (2) and the wait control group (3) receive access to Covivio after a delay of six months. The primary outcome measure is the Diabetes Self-Management Questionnaire-Revised (DSMQ-R), collected at baseline, two (post-treatment), and additionally three and six months follow-up.