I've tried a variety of things such as:
Deactivating and then deleting WP Smush Pro.
I've looking int ftp to make sure the files are no longer there.
I once had WP Smush. But I've deactivated that and deleted it from my server.
But every time I install WP Smush Pro it just takes me to the WP Smush settings and asks me to "Try Pro Features Free."
Any help would be greatly appreciated.
I've opened Support Access for you.