[Support] Shelly no caching accessories
**Describe your problem**
I have 70 accessories but hoobs only finds 5

**Describe what you have tried so far**
A clear and concise description of what you have tried so far to solve your problem.

**Environment:**
 - Shelly device(s): [e.g. Shelly 2.5]
 - Plugin version: 0.18.0
 - Device running homebridge: [Hoobs 4 on Raspberry]

8/7/2021, 22:26:44Shelly Bridge starting
8/7/2021, 22:26:46Shelly BridgeLoaded plugin 'homebridge-shelly'
8/7/2021, 22:26:47Shelly BridgeLoading 1 platforms...
8/7/2021, 22:26:47Shelly BridgeShelly5 accessories loaded from cache
8/7/2021, 22:26:47Shelly BridgeBridge is running on port 51826.
