Constantly Showing 1 Review Pending In Menu

Hi there – we have a very cosmetic issue however it would be good to get it fixed. In our woocommerce menu there is always one review pending, a red notification next to Reviews (1) even though we have approved and deleted all reviews and also comments. I’m not sure if there is a fix for this? We’ve uninstalled/reinstalled and cleared all our backend cache etc… thanks in advancea and for the awesome plugin!