Cannot change Default Text or other changes

Hi,

When I try to change the default text for pre-order buttons the text doesn’t change at all. Also, when I try to turn off pre-order for a specific product the purchase button still says pre-order. Further, whenever I create a new product the purchase button says pre-order and the pre-order box isn’t even ticked.

I have tried deactivating the plugin and reinstalling. All the buttons on my store still say pre-order when the plugin is uninstalled.

Is there a known fix to this issue?

Thanks!