Well, no luck so far. After their initial suggestions failed, I received the following reply...

TicketID: 10097
Solution:
Dear Sean,
We are aware that some users who could use SideStep before cannot
access it after we implemented some changes. Our engineers are working on
this and we hope to have a solution in our next release scheduled for
April 1st.

Please let us know if we can be of further assistance.

Sincerely,
SideStep Support Center


Wait until April Fools, I guess.
stc007