Please provide your Plugin Environment when posting in the forums. (see posting guidelines)
This helps us understand your situation and assist you better. There is no “Pages export”. There is version 4.4 ,x of Pages, and a 4.4.xx of ProPAck.
Exporting and Bulk Actions
All of your versions need to be on 4.4.xx…
Anything below version 4.3 of anything is no longer supported and will not be maintained. I am not sure if you mean ProPack v 3.3.xxx or 4.3.xx??
Your Plugin environment (screenshot) is appreciated.