How to Install Enigma Silvo Build on Kodi (Firestick & Android TV)

Problem: Can’t get any repo’s to install from zip file. Get the message ‘Network is not connected’. Running the latest version of Kodi 21.2 on the Formuler Z11 Pro Max. I have ‘Unknown Sources’ turned on and Update Official Add-ons from any Repositorities selected. Trying to load Kodi build Enigma Silvo, and also The Crew repo. Both give the same error. Not sure where to go from here. Any help would be appreciated. Thanks in advance.