Hello. I have been using Doctopus for the past five years, and have not had any problems in using it. For the past two days, I have tried to launch Doctopus from a student roster that I created for 2019-20. When I click Tools > Add-ons > Doctopus > Setup > Step 1 Select Mode, the Doctopus Screen appears on the Google Sheet and just spins. It never launches.
I really like using Doctopus, but I may not use it again if I cannot find a solution. I hope this can be fixed. Thanks.

Art.