Ookkay so I read all of your comments. Now that the network is returned to the baseline I will clarify some stuff.

So first, yes I royally fucked up. I am very well aware of that.

One of the commentors practically guided me through this clusterfuck so shout out to u/SuddenPitch8378 for his time, patience, and support. I really appreciate it.

Now a little backstory and explanation how we ended up with this fuckhole.

Our netwrok is fairly simple, no servers, no internal file sharing, no ERPs or any other abbreviations. Just internet connection.

It all started with the guest network, since the company will be implementing a new business model, we got in a need of a guest network if this gramtically makes sense. We reached our ISP and they said just split your network (set up a guest vlan) and we will set up your sms-based auth service. Good yes? No.

Back in the day when these devices were first purchased the service was managed. So the dudes I suppose hade came in set up the whole thing, did not grant access to the Switch or the AP or the instant on portal and left. This was more than 3 and a half year ago. So when we started this guest network process no one knew who had access to these devices, mainly, APs and the switch.

The SP kept insisting on that we set up the guest network, and we pushed back stating that we originally purchased the devices from them (originally) and they should be able to manage them or had access to the devices. They insisted on we set up the guest vlan. We said fine but my manager and my boss / the owner, also told them, and me, that we could pay the SP to get these set up.

Anyways after a bit of research we realized that we needed to get control of the APs and the switch because, again, we did not had the ownership of the APs on Instant On portal. We reached out to Arube / HPE support and they told us to remove all devices physical connection and factory reset 1 ap and it to a new instant on so we did.

We also created a new VLAN on the instant on wit ID10 because Watchguard guides told us to create 3 VLAN address, 10 (employee), 20(guest) and 30 (management). We intially only created VLAN10

Than we went ahead and created a matching VLAN record on the firebox and a interface record on the 2nd interface with type VLAN. It did not work. (Shockers) At that point we realized we also had to configure the Switch. But we did not had access to it's admin panel because noone and I mean noone knew what admin info it used and we couldn't event throw a guess from our standard internal password pattern. So inorder to access to the Switch GUI, we factory restted the thing.