Your scripts looks ok but it could be your script is not waiting for the UI to be ready. There could be insufficient Delays or UI is not ready. Try adding a delay before Select Item inside ChangePage workflow.
To test if the UI issue, please enable Slow Step Debug mode and set checkpoints before the UI Automation activities. You should wait till the UI is fully loaded then continue with Step Into the next activity.
i found the similarity by checking the selectors, it is same as you said in earlier conversation.
Page 1, column 5, row2
Page 2, column 5, row2
Page 3, column 5 , row 2 and so on…
now, i know that row is being refreshed whenever page changes like it starts from beginning.
U can program click action with dynamic selector, containing table row index variable (int_Row.toString). After each row u change value for the selector by 1 (int_Row = int_Row+1). When you finished page, then click next page button and reset this integer with assign int_Row = 1 (or whatever value is for the first row in that table)