You need the make the form and fields inside the subform flowable to expand and shrink them on the basis of show/hide fields. For drop down selection, you can write the script in exit or change event and write your script in side it.  

In the doc:ready event we can check the client application and its version in Java script and show any message to the user. But to forcefully open it in Acrobat, I didn't find anything for this.

So in the current script of dropdown, add a new condition to check the dropdown selection. If its not equal to fish, then only do..whatever you are doing.

use this now: this.parent.parent.instanceManager.removeInstance(this.parent.parent.index);

I received your Form and fixed this. You need to do below things: 1) Allow page break for "Page1" 2) Allow page break for table "h_Table_experience" 3) Inside the Row1, wrap the "Button1", "Cell1" and "Cell2" inside the subform individually.   It will work.   Thank You

May be try to delete the field first and then put again, and then wrap in subform. if issue persists share it with me.Share it over Google drive(vkatoch07@gmail.com)

Put the field inside the table in the subform and allow the page break in the subform. It will work.

I think you need to remove the script from initialize event and show/hide the row on the selection of the dropdown mentioned.

For us storage is AWS S3, so using S3 api to access docs in java.

You need to read the pdf from storage directory by using java custom service. This is the one use case we have done. Reading the pdf from a storage device by using java, created the map of document then passed that map and ddx to assembler service.   This could be the one of solution to your problem...