Add existing assignments and quizzes to the Assignment section?

j_m_p_a_langedi
Community Novice

Since +/- 2 days I haven't been able to add existing assignments and quizzes to the Assignment section. In the Assignment section, when I click the + button to add an assignment, I no longer see the option to choose an assignment or a quiz that I already created. Until recently (if I remember correctly) this option was available.

Does anyone know how to solve this problem?