First, I want to point out that I have been a box.com user for several years. I am logged in using one of my business accounts. However, I have a separate account that I have been using for about a year or so.
As of today, I cannot log in. I called and convinced a sales person to tell me that I have been locked out due to nonpayment. I have not seen any emails or notices with respect to nonpayment.
I am incredibly frustrated that my account would be locked up. If I were notified of a billing issue, I would have resolved it. My best guess is that emails were sent but ended up in a spam filter or something - I have received no emails from box since around December 2020 at the applicable email address. Emails are unreliable - before locking someone out, there should be additional attempts made - at a minimum, send a physical letter by US Postal Service to the address on file. That would more than pay for itself, and is far less than the customer acquisition cost. Now, I am extremely frustrated, and will remember this going forward. It may impact using box.com going forward with multiple business accounts - not out of spite, but because I cannot trust that this will not happen again.