Hi Sean, pretty certain exodus and specto have to be authorised within the addons rather than universally - the blog you've posted is quite old from 2016.
Here's a guide from our friends at the ares project
Exodus- requires (re)authorization from within the addons tool settings.
-S.A.L.T.S.- (currently down)
http://www.ares-project-blog.com/kodi-how-to-tutorials/salts-configuration-guide/
-Elysium- (Zen renamed) Requires to be enabled in Tools>Debrid> click on Enable Real Debrid.
-HEVC- Video Club- requires same process as Exodus.
-Release Hub- Configuration>Auto view settings>enable & (re)authorize.
-Real Movies- Enable via Real Debrid Login found at the bottom of the add-on.
-
Specto- Same as Exodus.
-BOB- Enabled via Mrknow URL Resolver. (same process as Universal URL Resolver)
-Skynet-Silent Hunter & Maverick, questionable at time of testing, many links not working.
-IceFilms- not tested.
-Icestream- not tested.
-StreamHub- not tested.
Other Add-ons will be tested in the very near future and when the current Add-ons displaced by the TVA situation find new homes