Also with the requirement to have a Casio ID, it is also quite unacceptable that they have not yet fixed/enabled email verification since that is essential for creating new Casio IDs, despite it now being 4 days since the issue first appeared.
Those buying a new, expensive G-Shock within that time period cannot use a large part of the functionality.
If you spent a bunch of money on new tech and the features you need cannot work, you are quite rightly going to be seriously upset.