Board Thread:Questions and Answers Forum/@comment-212.47.15.98-20151228125858/@comment-25916964-20151229230747

Vault of Glass and Croats End are Raids, which are not required for the daily and weekly missions. Same goes for the Prison of Elders. Given that your level is 34, you probably just aren't a high enough level and don't have enough Light (average defense and attack of all your equipped gear).