we cannot update a field on our content calendar

Hi, I needed help with airtable, specifically on the fields of our content calendar. We have this added field that says “Updated Verbiage” and this is where we usually attach the Updated Document. We were able to use that before but recently and these past few weeks, we had a hard time using it because the field is not working. We cannot click the field and add the updated document. Has anyone experienced the same dilemma and how were you able to fixed it?