From this detailed guide, you can learn how to install IPTV Merge Addon On Your Kodi.
IPTV Merge is a Kodi addon that works in conjunction with PVR IPTV Simple Client to access multiple IPTV Playlists in one location.
It works with nearly any IPTV Service you prefer as long as you have access to the Provider’s M3U URL.
Since this add-on can’t be installed through the official Kodi repository, it must be installed from an external provider which we display in the screenshot guide below.
this
installation guide applies to all compatible devices including Amazon
Firestick, Fire TV, Android & iOS, Mac, Windows, Android TV, Android
Boxes, etc.
How To Install IPTV Merge Kodi Addon
- Open Kodi
- Be sure to have the Unknown Source box checked as Kodi requires this before installing 3rd party add-ons.
- HOME Screen > Add-ons > Settings button 
> Add-ons > Enable Unknown Sources.
- From your Home Click Settings (cog icon top left)
- Click File Manager
- Click None
-Type in the following EXACTLY https://slyguy.uk
- Click OK
- Click back on your remote/keyboard
- Click Add-ons
- Click Install from Zip File
- Click Slyguy
- Click repository.Slyguy.x.x.zip.
- Wait for Add-On Enabled Notification
- Click Install from Repository
- Click Slyguy Repository
- Click Program Add-Ons
- Click IPTV Merge
- Click Install
- Wait till you can see the message Add-on installed pops up. That's it! You can now find you addon from main menu > Add-ons, enjoy.