When will I receive new message or instant response from Alibaba.com suppliers directly by WhatsApp?

Under the following circumstances, you will receive new message or instant response from Alibaba.com suppliers directly by WhatsApp:

(1) If you haven't read the message in one hour on Alibaba.com, you will receive the notification once a day at most especially between 9am to 6pm at your local time.

(2) If you closed your phone's system notification of Alibaba.com with WhatsApp, you will receive that on WhatsApp once a day at most too.