[WP Smush Pro] Smush asks me to upgrade to Pro even on the free trial

Hi there,
I recently upgraded to the free trial for WP Smush but it doesn't look like we've unlocked the Pro features on the WP dashboard. I am able to bypass the 500 image limit, but I'm still getting this message:

" Joshua, you have 494 attachments that need smushing! Upgrade to Pro to bulk smush all your images with one click. Free users can smush 50 images with each click."
I've run WP Smush to optimise remaining images but the number of images left to optimise seems to reset every time I navigate away from the WPDEV screen.

Is there a way to work around this?
(This would be a lot easier to explain if I can send screenshots, so let me know if you need any to illustrate)