Weird situation with multiple bids offers

[Kate J.]

I received several offers on the property I am selling. I've asked for best and highest. One of the offers is higher by 15k than everyone else. However, they did not send the contract and they were sending email only. Now when I emailed that we accept this offer, they are delaying with sending updated contract. The call for best and highest was on Thursday at 10 am. Do you think I should move on with other offers? The agent says that her client is in Columbia and did not reply her email. I kind of feel that this is buyer's remorse....