You may get better support than me. Here's how to create a support
ticket:Go to:https://support.authorize.net/Click the black menu button
in the top-right corner.Click Sign-In / Merchant Sign InEnter Username &
PasswordClick Log INClick Email Pin To ...
I submitted a ticket, but the respondent provided only generic,
unhelpful advise, even after being directed to this thread. Sadly, I
suspect SIM was sandboxed intentionally for security, and there will be
no fix because SIM has been phased out.
Thank you Jaydeep2026 for your detailed problem description! We're
having the same problem As a temporary solution, we added a link buyers
can tap to redirect manually to our thank you page.
