Select the ‘My Location’, then your location. At the bottom of your location you will see ‘Installed SmartApps’. Select this line (on the left) and it will open a page with smart apps associated with the location At the bottom will be ‘Other’. This is where this Service Manager should list as a smart app. If not, delete the Smart App and start over. Something abnormal (and not associated with the Service Manager) is occurring. It may be in my instructions; however, I have personally tested the instructions several times.
I would suggest deleting the smart app and starting again. I know you probably followed the instructions, but when all else fails, we have to punt.
Also, look at this link: