I will tell you why this is a great plugin:

I use the free version for many years and I migrate all my affiliate links to every new site I build.
I tried all the other plugins for days and I found this is the best one.
Sometimes when I migrate my links to a new site I have to deactivate and then reactivate the plugin, but I never had any problem with it.
If you have any issue with this plugin, just write to the author and he will answer within hours.