Unfortunately, since August 20, 2018 Highrise no longer accepts signups.
We keep the module in Appmixer for the older customers who have their Oauth2 application. If you are a new Appmixer customer, you won't be able to create the OAuth2 application and therefore use the Highrise module. In that case, you should remove it from the platform.
Requests to the Highrise API contain headers with User-Agent property. This is set by default to Appmixer, but it can be overwritten using Backoffice:
