Interesting that a previous version works. I am still using the latest version of Opera Developer in a virtual machine on the same computer that was having the same issue of not connecting, just like you all.
I'm not sure how else to troubleshoot this?

I should point out that I am in VPN mode when I use the Opera Developer browser and it still functions as it should.

Interesting that a previous version works. I am still using the latest version of Opera Developer in a virtual machine on the same computer that was having the same issue of not connecting, just like you all.

I'm not sure how else to troubleshoot this?

@pdn216, I have had this issue as well and after a week it started hanging then stating that the websites I'm trying to reach cannot be found or that it has moved. However, I have installed a VM running Windows 10 and it seems to be working fine, even though the Opera Developer v.39.0.2234.0 on my regular desktop isn't. I'm wondering if the VM is bypassing a blocker that my ISP is preventing me from using Opera's VPN feature? I'm not entirely sure if it is actually my ISP blocking but they are able to do that.