Thanks for the report, we flagged this issue with our team.
Can you please confirm which setting you are using in your Dotdigital account:
– Enforce double opt-in for signups from signup forms and some API methods only (default)
– Enforce double opt-in for all signups, including bulk uploads
Enforce double opt-in for all signups, including bulk uploads
We tested the sign up and could not replicate this issue when using – “Enforce double opt-in for all signups, including bulk uploads”.
We will need more information to identify this problem – to do a test on your website and see the submitted data in your Dotdigital account.
Please submit a support ticket via https://support.dotdigital.com/en/ and reference this forum post so it gets escalated to the correct team.
After doing some more testing with other colleagues who did get the double opt in email from the shortcode, I think it may be a known issue with resubscribing the same email address. Thank you for investigating.