Online auction dates adjusted?

Hi! I'm newish to reselling and just do it for a little side cash. I just tried bidding in my first online auction found through estate sales.net. I placed a few bids but I went to check today and the timeline had been adjusted by like 3 days? So closing is a totally different day and pickup is as well! They don't ship. Luckily I think I can do pickup on the new date, but I'm a little annoyed because what if they'd changed it to a day of the week I'm not available during the short pickup time frame?? Is this typical? Maybe it's totally normal so just wondering if that's part of usual operations if there haven't been many bids they extend or something.