.docx to .pdf is changing font

I do my formatting in Word 2010, saving my work as a .docx file. Then I convert to .pdf to send the result to the professional printers who send out my newsletter. I could use Word to save the pages as a .pdf, but I have found that the resolution of .jpgs and .pngs is much improved if I convert the file using the Adobe PDF Pack online app instead of the built-in Word conversion process, so I paid for a year-long subscription to Adobe PDF online services. In December 2019 I converted a page with a textbox that contained alot of text in Adobe Hebrew font. It converted accurately, as the PDF Pack has always done for me. However, today (February 18, 2020) when I tried the same file, using the same account and conversion option, the result was that the font was changed (to what font I do not know) to a somewhat similar font style, which changed the spacing, which cut off the last line in the textbox. Same file - different month and different result. When I used the "save as" command in Word, it converted correctly. What changed in the new year? I thought that coversion to .pdf preserved existing formatting. This is very upsetting and time consuming to have to deal with this problem. Is "Adobe Hebrew" no longer supported by Adobe PDF?