There are many volunteers, living in different time zones, who frequently stop by and help. Replies are usually received inside a day, and sometimes inside an hour.
Please note, however, that there is no paid staff waiting "on stand-by" to provide immediate online replies, should no volunteers be available. As with any other free online tutoring service, users should expect to wait hours, if not days, for an online reply. If a user requires immediate or guaranteed replies, that user should contract with a paid service which offers such.
Thank you for your understanding.
Eliz.