Individuals tend to prefer one communication channel over another. However, to keep reaching goals as a team, you must use both written and spoken words. The power of JIRA in agile project tracking is unbeatable. It's all about speed and transparency. But, to deal with blockers faster and less painfully, I recommend using verbal communication and a big physical board at your daily scrum. With the new release of Agile Cards for JIRA updating your physical agile board is quick and any team member can do it.