Do step: Solution 10: Check that your USB Port is ready, set up USB Port to USB-C Solution 11: Fix an issue with filling out and filing an online if and PDF filler, fix errors in Fill the online if and PDF filler. Solution 12: Check that you have proper Internet connection from a desktop or laptop computer to your mobile device. Make sure to download the PDF filler and fill it. If it is not working, and you are sure you have the correct internet connection, Try Step-3/4, find a way in your network, try to restore the issue, or try a different website or a different Internet connection to try to fix the issue. If you are using a desktop computer for fillable PDFs, make sure the USB 3 port is fully used by other programs like Adobe Reader to read the PDF. Solution 15: To see if a document is filled out correctly, try to compare the document filling out with what you see in your computer. Also check if there are any mistakes in the filling out or filing the PDF file. Sometimes, a mistake when filling out can cause a problem in the other document. You can correct a mistake in the computer and then when filling out the PDF file check to make sure that the error is corrected before you fill it out. See also, how to fill in and fill the form: To fill out (copy) a PDF file Make sure to make a copy of the PDF file before changing the document fill out in a PDF filler or if it is a Fillable PDF that did not have fill-out issues before, fill it out and fix the fill-out issues before filling out the form. Once you fill out the form, if there are any errors in the PDF document, try to find the file and fix the problems before filling out the form. Check if the page you are looking in (PDF) is the correct page. If you fill the form up or fill it out correctly the PDF has the correct page number, and you need to do some sort of correction to make sure your PDF and the PDF it is linked to are the real thing. If you have any problems with filling out the forms, make sure to fix any other PDFs that could be filled (and you need) before taking your free trial of Printable PDF and fill it out. Print the PDF and then fill out the form in your web browser.