Hello Cantova If you're having trouble logging in online with your M-Login or establishing the digital connection between the M-Login and your Cumulus account, I recommend that you contact the Cumulus Infoline team directly on 0848 85 0848 or send them an e-mail with your query. The e-mail address would be cumulus@migros.ch. I recommend you mention your Cumulus number, the e-mail address you use and if you get an error message, you can send a screenshot of it directly. They will certainly be able to help you. Best regards and have a nice day. Sofia