UC Surface on iPad Times Out

Up until last night, my iPad would stay open when ruing UC Surface.. now suddenly it times out and blanks the screen. Doesn't always discoect but i have to manually call it up again..

I have another iPad that is 'working' - i.e., the application keeps the ipad active and the screen stays on. They are different version ipads (Ipad2 vs Ipad Air 2) and the version of UCS is different - the one that times out has the most recent (Sept 17) version.

Has anyone seen this? I can't find much reference to the issue anywhere..

Thanks!

Wes Jones