There are various types and makes of computer, and communication devices, each with different operating systems, marketed by different companies. The developer of e-Sword has developed different e-Sword applications. Access the developer's web-site at https://www.e-sword.net/ then select the LINKS option. Select the type of e-Sword appropriate for your device. Then, from the web page you have moved to, select the FAQ (Frequently Asked Questions), and read the entries carefully. Follow instructions. You will find an option to contact the developer if you have problems.
The modules which are applicable to all devices, running the most recent updates of e-Sword, all have a filename with the file type having the format *.xxxi (the last letter of the four-letter file type, after the period, has the letter "i". The previous three letters indicate various varieties of e-Sword modules). This will work on Microsoft PC running e-Sword after version e-Sword 12.2 and e-Sword version 13, and later, and on the touch-screen devices Apple Mac, iPhone, iPad, and also on the Android devices which are runnning various varieties of the Linux operating system. A systematic process is being carried out on biblesupport.com to provide the modules which have been uploaded to here, into the latest format. This process is ongoing at present.
Any module you find here with only *.xxx (three-letter file type) are for e-Sword version 8. Any module here with *.xxxx (four-letter file type with last letter "x" will not work on your device, and will need to be converted [using a PC running microsoft, and using the MODULE CONVERTER app from https://www.e-sword.net/extras.html and then transferred to your device]. Try to email it to your device.
After downloading the files to your device, you need to move them to the relevant file folder from which e-Sword will find them. Please read the details on the FAQ page, from the developer, Rick Meyers, and follow his instructions carefully.