Some journal publishers are crazy. They dont allow printing journals in this era of open source and collaboration. The following list linux tools (also available on Windows) to remove print protection from a pdf file:
pdftk DOC-20170515-WA0030.pdf output out.pdf allow AllFeatures WARNING: The creator of the input PDF: DOC-20170515-WA0030.pdf has set an owner password (which is not required to handle this PDF). You did not supply this password. Please respect any copyright.
qpdf --decrypt input.pdf output.pdf
Joel G Mathew, known in tech circles by the pseudonym Droidzone, is an opensource and programming enthusiast.
His favorite pastime is grappling with GNU compilers, discovering newer Linux secrets, writing scripts, hacking roms, and programs (nothing illegal), reading, blogging. and testing out the latest gadgets.
When away from the tech world, Dr Joel G. Mathew is a practising ENT Surgeon, busy with surgeries and clinical practise.