Cannot Paste Excel info into PDF files

We are an Accounting firm.

I need to past copied information from Excel into PDF files.

We have 35 users that use Adobe Standard 9.5.

We have one use that uses Adobe X Standard.

The 35 users can paste into a PDF file with no problems.

The 1 User of Adobe X Standard cannot.

Can someone please assist me is getting Adobe X Standard to allow a simple paste from Excel into the PDF.

Thanks.

Cepolly