This has happened to me a few times.
I'm just about to make my bet, click confirm, and a line moved simultaneously.
SBR brings up the change and says confirm changes which I accept.
Upon clicking accept, it says invalid SBR password and all you can select is go back (which takes you to the betting screen with the stale line) but you have to go alllll the way back to the beginning and reload the lines to place the bet.