Log into the signature service by going to the Visma Sign web page, and select login from the top right-hand corner (on a mobile device, in the menu). Add the user ID, i.e. the email address and password that you entered when you registered.
You can use the signature service both as a private person and in any company role without logging out in between. Go to the top right-hand corner, where your current role will always be displayed. The role you have chosen determines which company documents you can see, which company will be invoiced for signature invitations etc. It also determines the company name, colour, logo etc. in signature invitations.