Embed fonts Illustrator
Did you make your design (with text) in the Adobe Illustrator program? Then make sure you include your fonts when you convert it to a PDF file. You can read below how to embed fonts in Illustrator.
Do you design your prints in Illustrator? Then save your file as a PDF and embed the fonts.
Go to 'File' and click 'Save as'.
Enter a file name, select Adobe PDF (*.PDF) as the file type and choose a folder on your computer where you want to save your file. Click 'Save'.
Choose the preset 'PDF / X-1a; 2001'. Click 'Save PDF' and your file will be saved as a PDF with embedded fonts.