T-mobile 5g home internet forcing to tower with no data issues/changing towers/bands

I don't know if this is relevant, but it may help someone else who has made the same mistake and is having issues with 5g connections. Recently I called customer support to troubleshoot my crappy connection which kept intermittently dropping needing reset of silver Nokia unit and they chose to send me a "replacement". When I set up the new one, I relocated it about 4' from the old spot (just on  the other side of the window where it had sat iin the past with the same issues) and again, it had the same connection problems. Using the nearest outlet, the huge plug was very visible so I used a flat-type connector 3' extension cord and dropped the cords behind the table. The old unit was also connected to this same extension cord.

So my signal didn't change. After rebooting, it would connect to both bands for a few seconds then go strictly to the B41 band (i think that's the one). Frustrating... I don't know what triggered the memory, but I recalled reading somewhere that connecting things to extension cords could cause issues like overheating, so I removed the cord, plugged the unit directly into the wall and I've had solid continuous dual band connection with 125-150mbps for the last 2 days (25mbps max prior). So for some reason beyond my limited understanding of these things, the cord was interfering with the 5g signal and probably messing with the other band as well. I suppose it could be cooincidence and it was the new unit that helped stabilize the signals, but I think it was the extension cord.

Hope this makes sense and is useful to anyone having issues that may also be using an extension cord.

ItsMeSB