Scheduled time change after accepting block

I only do the reserved offers, usually get two-three a week. A couple of days ago I accepted one for Tues, 3:15-7:15pm. I have a screenshot of that. Today while accepting a different offer I saw they changed the time for Tuesday to 5:15-9:15 sometime AFTER I accepted it. It’s only 2 hours difference but the whole reason I accepted was I would still make it home in time to put my kids to bed. Has anyone had this happen before??