Make sure you're signed in to the proper account on the user panel when voting (your game account, not forum). If it's the correct account, and you're still not receiving any gold, try the following:
- Clean browser cache/cookies or try using a different browser
- Make sure to fill in the captcha's correctly
- If that's not working, the voting sites may have the IP range blocked. Consider using a VPN to change the IP
- Attempt using Incognito mode in the browser