Cant Save or Share photo (Note 3 PS Touch)

Hi guys,

Please help me on this problem. After I done with my picture i want to share or save the image to gallery, after i press the bottom third icon there are 3 selection for me to choose
1.Upload to Creative Cloud

2.Save to Gallery

3.Share....

After i select any 1 of them PS Touch require me to choose the image files type (JPEG or PNG). after I selected the Files type, the problem occurred. The "OK" button is no functioning. (i wonder why)

Please help me on this issue. Thanks