I am using 3CX PBX Express (3CX hosted in cloud by 3CX (not Google and not AWS))
Could you please let me know if I am still able to create VPN connection to the cloud or is it impossible?
Please note that is not possible to implement a VPN connection to a 3CX hosted instance. If that is required then i would recommend installing 3CX in your own google instance where you can have full control.