We use Kindle FireHD 6's (4th Gen) as our Squad scoring devices and experienced multiple "lock-ups" on several of the scoring devices that SEEMED to occur after a shooter was DQ'd on a stage and then the squad tried to move to the next stage.
When I worked with each device, it seemed you could go back into the stages that were shot during and before the DQ, but couldn't get the tablet to select any stage that had not been shot yet. In all cases, when selecting the next stage, the app would revert back to the initial match screen with the "Enter Scores", "Edit Shooters/Squads", etc. menu options.
We tried exiting and restarting the Practiscore application. We tried rebooting the FireHD 6's. Nothing worked once they decided they were done for the day. One squad reported that rebooting their FireHD 6 got them out of the "lock-up" and they were able to continue scoring the next stage.
I had a different behavior on a Samsung Galaxy Tab 3 (with Samsung's stupid customized <crippled, really> Android OS). That device just reported that Practiscore had "stopped" and went back to the initial match screen.
We made it through the match, but I did end up with sheets of paper from a couple squads that I had to enter into the iPad master device in order to get everyone's scores entered. The good news was, none of the devices lost any data they were given, and Practiscore collected it all together into the iOS iPad without any issue. I just ended up sync-ing like 8 devices for only 5 squads.
I would love to provide any information that could be of help in diagnosing and resolving this issue. Guess I shouldn't have updated to 1.3.12 (on every Android device) on Friday before a match on Sunday, eh?
