On Monday, the developers will correct the error.
While there is a plan B for you - ask an employee to go to the 1b.app website with your phone number.
Next, write it in your box in Access Control https://1b.app/ru/billing/
After that, he will be able to enter your box through OneBox ID, the user will be automatically created and then you can edit it.
A crutch, but as a solution for a couple of days it may work.