he will invite you to submit your proposal for the job. A professional freelancer responds to an invitation on the platform within 3 days of receiving it, so that the client can settle early on the next line of action to take.
Responding to an invitation may mean you accept or decline it. Declining an invitation could be as a result of having other projects you are handling, or that you are busy outside Hourspent. Be sure your availability setting is on not available to keep invitations from coming if you are not free to take on jobs.
A client may withdraw an invitation after 3 days of no response from a freelancer, if he has decided to suspend the contract for a later time, or has found another talent to hire.