LUXX review for Packlink PRO Shipping Platform

Clonky and buggy app. Had to add sender details three times as it failed to save or accept it. It couldn't find the post code until you try multiple times. And when we try to add delivery service, a fixed popup comes up that will not go away ("With your Shopify pricing plan, you can generate shipments from the orders tab, but you cannot display our shipping prices to your customers."). Who's got the time to constantly be in touch with support for all these buggy apps if basic features fail?