Then used the wemo app to connect to home and it worked perfect. You can also enter the code.

Belkin Official Support How To Connect The Wemo Mini Smart
How to add wemo mini to homekit. Connecting your wemo mini to the apple home app only takes a few steps. After setting it up you can use the connect to the apple home app feature through the wemo app. For complete instructions on connecting your wemo mini to the apple home app click here. If you have a 2nd gen wemo mini the apple homekit code is located on the sticker at the back of the wemo mini. For wemo mini 1st gen make sure your wemo mini is set up with the wemo app first. So i went into the settings for the wemo mini and erased all content and settings then re added to the wemo app.
Setting up wemo mini wifi switch with apple homekit without using a bridge. Go to the wi fi settings of your ios device. Under the set up new device. Wemo also works with ifttt connecting your home electronics to a whole world of online apps. Section tap the wemo id. If your wemo mini does not have an apple homekit code sticker you need to use the wemo app to connect the wemo mini to the apple home app.
Wemo is a growing family of innovative easy to use products that use mobile internet to control your home electronics power water and wifi right from your smartphone or tablet. Use the camera to scan the code located on the back of the wemo mini. Tap add to home wi fi and it will redirect to the apple home app. Im having the same problem and cant add the wemo dimmer to my homekit app. You can also find the sticker on the quick start guide that came with it.