Auto/Lock Not working under Guided Access
My 5yr old uses his 9.7" iPad (MP2J2LL/A) as an AAC speech device. It's in essence his voice because he is non verbal. We have his speech app under guided access so it is the only app installed on his ipad. After the last OS update, the auto sleep/lock function (which was working before we updated to the latest OS) has stopped working which is draining his battery and making it a challenge for his voice to last through the day. (with the auto sleep, a single charge would work 2-3 days). My son is unable to manually lock/sleep his device. All the settings are correct and have not changed. Is there a fix in the works? This is his voice after all. Please advise!
***I just tested before positing ... The auto/lock setting in display is set to 2minutes ... 20 minutes later , it has not gone to sleep.***