Understatement review for Related Products | Cart Upsell

It does what its supposed to but its a bit buggy, adding manual products is quite a hassle. Keep clicking through the drop down menu even tho I'm clicking on the product resulting in product not added to the list. This seems to be a flaw related to the app as I have tried with 3 different browsers getting the same result. This causes every task to take a lot longer time then needed as I keep adding the same product up to 10 times before it gets added to the list. If it wasn't for this issue the app would be amazing. In the state it is now I can't recommend it