Im not sure what your talking about here... I don't think his plugin is causing this message, directly anyways.. it sounds like you have another plugin triggering this message... try from a virgin Kodi install , or use one of the APK's found in the first post that have the plugin pre installed.
Also, You do not need to change the MAC when switching from wifi to ethernet.. You pick one mac (randomizing the last 3 pairs), and stick with it.. you give this mac to the servers when you pay for them.. its bisically used as your login. so changing it will deny you access... While the NFPS server is free all MACS (in the valid range) work, so you just need a unique one .
its twitter search feeds. you can disable in enabled services addons