What do Online and Replies quickly mean?
Presence is approximate, and the quick-reply label requires sufficient recorded activity.
The Online indicator shows recent account activity. It does not guarantee the person is reading your conversation or can reply immediately. An open page, interrupted connection or background session can create differences between the indicator and actual availability.
The quick-reply label appears only when there are enough relevant conversations and the recorded results meet platform criteria. Its absence is not a negative rating for a new account. To call, request the phone number when available. That request may count in the seller's statistics without meaning a call occurred. Avoid repeatedly sending the same message simply because a presence indicator is visible.