Hello! I'm here to help you with sending BNB from your Coinomi Wallet. It seems you're encountering a "send address isn’t valid" error. Let’s delve into this a bit more to figure out what might be going on.

1. Double-Check Address Format: Ensure that the address you are trying to send BNB to is indeed formatted correctly. BNB addresses typically start with "bnb" or "0x." If you copied the address, try pasting it into a text editor to see if there are any hidden characters.

2. Network Compatibility: Sometimes, the error can occur if the wallet address is for a different network. For example, if you are trying to send BNB to a Binance Smart Chain (BEP20) address, ensure that the destination address is compatible with that network.

3. Refresh the App: Have you tried closing and reopening the Coinomi app? Sometimes, the app may need a refresh, especially if it hasn't synced correctly.

4. Update the App: Using an outdated version of Coinomi could also lead to issues. Please ensure your app is updated to the latest version available.

5. Manual Input: If you used a QR code to obtain the address, try typing it in manually. This can sometimes correct errors introduced by QR scanning.

If these steps don't resolve your issue, please let me know any specific details about the address format you're using or if there’s a specific step where you're getting stuck. I'm here to assist you!