Not really, and I turned off my anti virus, still no luck.

I think my ISP has simply blocked access to Opera VPN, but it works perfectly fine on my iPhone, could it be the two VPNs use different servers?

Try deleting third part data.

tried that, no luck

I downloaded the latest Opera on my laptop and for the free VPN and it's not working at all

Sometimes it's stuck at "connecting", sometimes it tells me "VPN is not working, Opera is working on the problem".

I have rebooted, turned off anti virus, still not working.

Other VPNs are working perfectly fine for me, for example Hotspot shield and Kaspersky VPN.

I'm running Windows 10 64 bit latest version + Opera latest version.