Letter & Symbols appear when "Combining Files"

[Vicki248658112ku7]

My individual PDF files look perfect, but when I use Acrobat Pro DC to "Combine" my files, it changes letters and symbols to boxes suddenly.

Please advise.  This has started in the last two weeks, I use this for producing financial reports.  

[Nancy OShea]

[Moderator moved from Using the Community (forums) to Acrobat.]

Windows or Mac?
Which app did you use to create the original document?
Which fonts, and are the fonts embedded in the PDF?

[Vicki248658112ku7]

Mac, Appfolio creates the original pdf file that looks perfect, then when I use Adobe DC to combine the files it seems to change all %, x, y, z, and a few other letters to squares. 

[Nancy OShea]

Do all documents contain the same fonts? 

Try using a different font.   Corrupted or incompatible fonts could be the problem.

[Vicki248658112ku7]

My original program does not allow me to change the fonts.  It all worked fine two weeks ago, but since then I have had an Adobe Update, and also a MAC update.  

[MeenakshiNegi]

Hi Vicki,

Did you try opening the files directly in Acrobat and see if it opens fine? If not, it is a font-related issue.

Check if the same issue occurs with files saved locally on the device.

If possible, share the sample PDF with us.

Let us know your findings.

Thanks,

Meenakshi

[Vicki248658112ku7]

Oddly enough, it seems to work when I use the web-based Adobe, but not the updated program on my actual MacBook. The files individually appear fine, but when I combine them they change.  Still troubleshooting on my MacBook.