I managed to link a new email with my Box account, but when I tried making it my primary email and was asked to enter my password, it wasn't accepted. I got an "incorrect password" error message, but it is my correct password. I can login to my account using that same password (copy and paste so there is no error involved). The same error occurs when I try to change my password. It incorrectly says my current password is wrong!
The same issue occurred when I tried the same things with a different Box account. This is giving me such stress because the original emails I used for these Box accounts are Google Legacy Suite accounts, and Google wants to delete them all in July.
I wanted to contact Box for this, but there doesn't appear to be a way to do so. I'm a free user.