Problem with OpenCamera

With XA2 I used to use the android app OpenCamera. Now on my Sony 10 III OpenCamera complains that it cannot save a picture to memory. In android settings I cannot find a possibility to give the permission for saving. and settings in OpenCamera behave peculiar.
Is there a solution?
(4.4.0.64/68, OpenCamera 1.50 or 1.49)
Best regards, Uwe.