If you have issues with opening one of your files in PDF Expert, please see the list of the supported file formats in PDF Expert User’s Guide available here.
Note: PDF Expert supports filling out AcroForms created in Adobe Acrobat or other similar apps and Static XFA forms created in Adobe LiveCycle. Dynamic LifeCycle (XFA) forms are not supported by the application.
If the content of the file is not displayed as expected or the app cannot open the file, please send us a sample file to rdsupport@readdle.com. If you can't attach the file to the email, please upload it to either WeTransfer or a similar file-sharing service (for instance, Google Drive) convenient to you and send us the link.