BI3TKL Before binding your LoTW account, it is recommended to change your password to prevent potential issues later. Specifically, if you modify your LoTW account after binding, a bug in the HamCQ community card could lead to an inability to unbind the LoTW account, resulting in incorrect login credentials and preventing you from retrieving QSO records from the LoTW platform. When linking to a LoTW account Certainly Please pay attention to whether your password is... Includes Besides uppercase and lowercase letters (A ~ Z, a ~ z) and numbers (0 ~ 9), Special characters (!, ;, ', /, ?, etc.), if any, please modify them to Does not contain special characters. The password. Reason:Includes special characters Using a password that was previously used on HamCQ when binding to the LoTW account will result in an unsuccessful binding (I experienced this myself). If there are any other details, please add them in the comments section.