Good morning! What's OOM??

If you check port availability online, entering your public IP, and port 22 is seen as closed, most likely it's filtered by your ISP. So you are saying that you can ping your router from outside? If...

It also happened to a friend of mine with Archer C2. I passed him this solution. Hope it works for Archer C2 also.

Well, if we're talking about VLANs, there should be a switch or a router which manages VLANs. I would start there. Check Ethernet ports configuration.

Where from you would take a link to Internet? A hotspot? An AP in a hotel? I believe you could use: http://www.tp-link.com/en/products/details/cat-10_RE200.html#specifications...

Just configure it with region of where you are located. That should be enough.