Get PRO version to upload unlimited amount of images ???

Since Yesterday the plugin upload page displayed “Get PRO version to upload unlimited amount of images”, I do not know that the free version of the plugin have a limited amout of images. It is bug or not ?
I use this plugin only for the upload option, the voting part did not satisfy my challengers.
This is the page https://mgroleau.com/wp/defis-de-mario/les-defis-de-mario-televersements-des-images/