Network Experts? Can't connect to wireless router to change settings UPDATE PG.2

Using MSP4 (Windows 10 anniversary), Surface Pro docking station and hardwired (ethernet) from wall into computer. Wire from wall is plugged directly into back of the router into one of the four ports.

On this computer, no internet issues. I'm able to browse through my ethernet and wireless connection.

Other devices (phone, iPads, another laptop, etc.) are all able to connect to the internet through wireless configuration.

I've spent hours and hours on the phone with TrendNet. They believe it is a Microsoft issue.

Here's what we have done (from what I can remember):

- Uninstalled Chome. Reinstalled Chrome. Installed Firefox. Even tried using Internet Explorer to go along with Microsoft Edge. Simply not able to log into my router using LINK

- Uninstalled ethernet and wireless drivers. Re-installed.

- Disabled Kaspersky Anti-Virus and Firewall. Used only Windows Firewall. No success. Even disabled Windows Firewall and went "unprotected" for a couple of minutes. No success.

- Changed IP4 settings to "Use the following DNS Server addresses: 8.8.8.8 for Preferred DNS server and 8.8.4.4 for Alternate DNS server. No success.

The only way I am able to access my router's settings are through wireless using my extra laptop or Google Pixel XL that is connected through my wireless connection. I am NOT able to use this extra laptop to connect through Ethernet connection as I do not have a docking station or RJ45 to USB adapter (although one is coming in today via Amazon).

Is this a laptop issue or is this a TrendNet issue?

What else can I do besides call Microsoft Surface Pro support? I'm tempted to purchase another router just to see if I can login to its settings from this computer.

Thoughts?