MAC is a unique identifier, It is not unlike a serial number. Some ISPs lock their modems or modem/routers to the customer's router MAC.
First octets aren't 192.168. The MAC locking wouldn't surprise me, I'll now try assigning the same MAC to the TUF as of the old device
there are some situations in which the wan-facing MAC could be different after upgrading to OpenWrt.
It will be different than you were using before if you are using a different device (as @LilRedDog stated - it is unique on a per-device level, but you can 'clone' a MAC address).
Testing on your computer would be a method to determine if the MAC address might be at issue here.
@psherman @LilRedDog writing this message connected through the TUF 
The reason was the MAC address as you both mentioned... The ISP locked the MAC address of my old TP-Link router's WAN interface MAC to the static IP they provide me with. Going back into my TUF config, locating the eth1 device under Network/Devices and changing it's MAC address to match the old one fixed the issue.
Thanks once again for all your efforts!
Awesome!
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Thanks!
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Show it solved by psherman; he worked with you from the beginning.
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Just for thoroughness , call your ISP (when you have time; no rush) and have them lock the appropriate MAC address in their system.
The MAC is registered to TP-Link and it could make a difference to your ISP that the MAC is proper.
Happy New Year!!! 
That was the 1st suggestion you got in this thread, too bad there had to be another 20+ posts before you actually did it ... 
WAN ip is not MAC and they have a static wan address from their ISP so from their perspective you did not pay attention to their post; they literally said they had assigned the TP-Links IP address.
You cannot blame them for dismissing the second post.
Not to mention their trying to fix it before asking for help had, totally, messed up the configurations.
That's how I read OPs last post, and he knew he had to set a static IP already.
I might be wrong though...
I continue to get the feeling you are convoluting MAC address and IP address.
your feeling is wrong
nm, happy new year 
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