The verification should be done over voice, not SMS.
Voice verification only works if an SMS verification has been attempted before.
-*--captcha*::
+*--captcha* CAPTCHA::
The captcha token, required if registration failed with a captcha required error.
To get the token, go to https://signalcaptchas.org/registration/generate.html
For the staging environment, use: https://signalcaptchas.org/staging/registration/generate.html
After solving the captcha, right-click on the "Open Signal" link and copy the link.
+*--reregister*::
+Register even if account is already registered.
+
=== verify
Verify the number using the code received via SMS or voice.
*-n* NAME, *--device-name* NAME::
Set a new device name for the primary or linked device
-*--username* NAME::
+*-u* NAME *--username* NAME::
Specify a username that can then be used to contact this account.
+This can either be just the nickname (e.g. test) or the complete username with discriminator (e.g. test.000).
Returns the new username with discriminator and the username link.
*--delete-username*::