A warning message should be added when a user chooses to change there username in MY BT .
The user should be informed that changing your username will cause issues if the customer has BT WIFI app to log into hotspots.
Changing a username does not affect the ability to log into
www.openzone.comBut it will not let a user access though there wifi app after changing username
This may be only a glitch in the system , but it either needs investigating , but simple pop up warning should be added until it is resolved .