We're sorry for the delayed response and inconvenience caused. You can use the Adobe ExportPDF service through the URL https://cloud.acrobat.com/exportpdf with your Adobe ID and password on a browser like Chrome, or Firefox, or Safari.
You can also use the freeware Adobe Reader to use the service of Adobe ExportPDF service, just sign-in with your Adobe ID and password in Adobe Reader.
For detailed information about Adobe ExportPDF, you can refer to Adobe article Using Adobe Export PDF
To download Adobe Reader, you can use the URL Adobe - Adobe Acrobat Reader DC Distribution
For troubleshooting, you may refer to Troubleshooting Create PDF, Export PDF, Adobe Send, Fill & Sign … services(PDFPack or Document Cloud...
Feel free to update this discussion for any further assistance.