Network stopped working, then a faslower Network with "_EXT" at the end appeared and is all i can use...

[MFeg]

Unsure of how it happened and when it started, but my Wireless Network was running fine on all devices, with good speed and connection except one room, my parents decided the best idea was to install a Pod in said room, upon installation, this new Network with EXT at the end appeared and that room has slightly better speed, whilst having horrible speed every else ranging from about 0.70 - 10mbps, and the original Network without EXT has become completely unusable. 

[Client62]

"except one room, my parents decided the best idea was to install a Pod in said room,"

This is exactly how not to place a VM Pods or any Wi-Fi Repeater.

Move the VM Pod / Repeater to be between the VM Hub and the room needed coverage.

The _EXT WI-Fi SSID is usually the network from a retail Wi-Fi Repeater.
The VM Pod typically maintains the same SSID as the VM Hub.

[Adduxi]

It is also quite common for a non wired backhaul Wifi extender to half the speed of the existing Wifi.....

Are you sure this "extender" is a VM Pod?  The old VM PLA extenders, I believe, used to use the _EXT name when setup.

[Client62]

Indeed that does look like a power line extender ( not a VM Pod ).

Is the other component of the Powerline extender connected to the VM Hub via a network cable ?

[MFeg]

The Hub was moved into a hallway where it would wifi would be better distributed, but this changed nothing, as the main VM network was still unusable and the _EXT one remained incredibly slow, while also being the only working one,

As far as I am aware the Pod we use is NOT a PLA extender, it is one of the hexagonal shaped wireless pods that are plugged into the wall.  Despite this, the _EXT network remains, and is still the only one that can be connected to...

[Client62]

If the VM Hub Wi-Fi is not accepting connections it is very common to find
MAC filtering / Wi-Fi Pausing has been applied via the Connect app.

[Matthew_ML]

Hey MFeg, thank you for reaching out and I am so sorry to hear about this, also a warm welcome to the community.

I can see some latest advice was given, did this help?

Also has it been over the last 48 hours?

[MFeg]

Eventually, It was discovered that this fault in the network was being caused by an external device that was placed in the house.  Upon removal of the device the network went back to working as intended.  I appreciate all the attempts for support from the community in this time.