After installed on Office 365, the Nintex Forms and Nintex Workflow are showing "Sorry, something went wrong with adding the app". I have google and selected "English (Unite status)" already, which is the same as my Office 365 language setting. But still fail and show the same message.
Are there any prerequisites for the installation? Please help.
This happened to me also, turns out I had all add-ins having this issue, non Nintex. Microsoft hasn't been able to resolve this for me. It also only affected one site, not all.