My chequing account balance on the dashboard is different from the balance in the BS. Does anyone know the possible reasons for this? How can I fix the problem?

Hi Christina-chen,  This is usually a date issue.  On your BS set to All Dates.  THey should be identical.  You might have some transactions in the future that your BS will not show if dated today whereas the dashboard shows the balance with everything past, present and future.

Cheers !