We start by choosing English as display language and then we sign in. We then have to choose English as a display language again by clicking the user name in the upper right corner.
Next we select the globe icon where it says Sýna tungumál: Íslenska to select a language.
Then we select Enska to select English as a display language.
Next we select the username in the upper right corner.
Then we select Library Card.
Next we select Personal details.
Then we click Icelandic below Default interface language.
And finally we select English as the default interface language.