You should uninstall the ZHA integration and put away the ConBee dongle until you have actually bought some Zigbee devices. ZHA integration is only for Zigbee devices, and a ConBee radio dongle are also only for Zigbee devices. Thus if you do not have any Zigbee devices then there is not yet any point in you using either or those, as you can only use those if and when you have Zigbee devices. And understand that ZHA and ConBee has nothing to do with a Tuya hub. Tuya hubs only use the Tuya integration, regardless of what type of protocols the devices connected to it are actually using.
You can connect all Tuya devices to newer Tuya hubs (read model specification what protocols each different Tuya hub supports, some
Tuya hubs even sypport Tuya branded Zigbee devices however it does then still use the Tuya integation and not the ZHA integration). If you use ZHA and ConBee the it can only connect Zigbee devices, so only if your Tuya devices are using Zigbee can you use ZHA and ConBee. Understand that Tuya do not just make Zigbee devices but instead makes various different variant of the same or similar products that use different wireless protocols, and some may use Zigbee but other use WiFi, Bluetooth, or Thread, and for nieter or those can you use ZHA or ConBee. This means that you can not blindly buy a Tuya product and expect it to use Zigbee or any other specific protocol.
Again you need to do a little more reading yourself. Read the ZHA integration documentation, at least the introduction and the section about what (Zigbee) devices are supported.
Zigbee
- Zigbee Home Automation - Home Assistant
- Is Zigbee right for you?
- Zigbee buyer’s guide
- Migrating from a Philips Hue Bridge to the ZHA (Zigbee Home Automation) integration
- Zigbee #1: where can I find a list of supported devices?
- Zigbee networks: how to guide for avoiding interference + optimize using Zigbee Router devices (repeaters/extenders) to get a stable mesh network with best possible range and coverage
- Zigbee Guide: How-to setup local custom device handler quirks in ZHA integration
- Mains powered Zigbee devices that aren’t routers
- Zigbee devices that don’t play nice
- Not many people know that… A random collection of Zigbee trivia
- A to Zig - a Zigbee glossary
- Database of Zigbee devices supported by ZHA, Z2M and others
- Zigbee2MQTT (Z2M) supported devices