All you need to install your e‑Sword module is to enter your Email address and "Product Key" you received when you purchased the module for use with e‑Sword. If you do not have that information, then just tap on the "Recover Product Key" button on the popover that prompts for this information.
No. E‑Sword is an "offline" app. An Internet connection is only needed for downloading the app itself, and any additional modules you wish to install.
No. Only devices running at least Android 7.0 Nougat (which became available in 2016.)
You need to get the Google Play Store app installed onto your Amazon Fire Tablet, then you can install e‑Sword . However, getting the Google Play Store installed requires a few steps, so check out the following web page for detailed instructions:
How to Install the Google Play Store on an Amazon Fire Tablet
There is a lot to it, but hopefully we can make it easy for you. The following steps should assist you in this endeavor:
STEP #1 — e‑Sword. You need to have a PC with e‑Sword 12+ installed on it. You can download that from here: https://www.e-sword.net/downloads.html
STEP #2 — Content. There are thousands of user-made modules already available for e‑Sword which can easily be converted for e‑Sword . Join the e‑Sword User Group where you may find what you are looking for, or if it doesn't already exist there are also tools by which you can create them! The e‑Sword User Group is here: http://www.biblesupport.com/
STEP #3 — Convert. After you have downloaded the e‑Sword module(s) you wish to convert for use in e‑Sword you will need to run them through the e‑Sword PC Module Conversion Utility. You can download that from here: https://www.e-sword.net/extras.html
STEP #4 — Transfer. The final step is to copy the new module(s) onto your Android device. Open e‑Sword , tap the menu button on the Bible view's top toolbar, then select the "Import" menu item. Browse to the directory where you copied the converted modules into and select them. The modules will be imported, but if there are any problems with a module it will be ignored.