att is optional here? It was accepted.
Yes, it's not wrong to add att here, it's a little more colloquial. It's more common not to use att after försöker.
Lots of dots.....
I wrote "öppen" and it was wrong. Can someone explain? I thought öppna was for plurals? Thanks
öppna is the infinitive of the verb (the present is öppnar).
öppen, öppet, öppna are the forms of the adjective. Don't mix them up :)