I mounted the multi sensor unit (wind anemometer, wind vane, and rainfall collector) first on a cut block of pressure treated lumber. Drilled holes through this block to attach it to the 10' x 1" two piece galvanized steel pole with two stainless steel U bolts. I then adjusted the provided plastic post mount so I could mount it to the cut wood block with the included wood screws. Very sturdy mount when I completed this! See pics.
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Overall a nice installation, but one suggestion: trim that square wood mounting board down as much as possible.
As it is now [kind of large] it will certainly generate some extra turbulence that will affect your wind readings [esp. direction] when the wind direction is perpendicular, plus/minus, to the board [advice from an old sailor who has been 'reading' that supposedly invisible wind flow for >six decades].
I use a thick, rigid plastic sheet material, sold as a kitchen 'cutting board' [of a marine-use "Starboard"-like plastic] bought at Wally's, etc., for such mounting uses; easier than wood to work with, and far more durable.
Looking at your pic of the LaCrosse console, it's interesting how LC's current generation of color displays all bear a strong resemblance. They're functional, readable, and useful.
My old main WX unit is just a mono gray display. But the LC clearance store had some very similar color plain temp/hum '2-display/1 outdoor sensor' sets on sale [~$25 iirc], so I bought 3 sets [1 for me, 2 gifts]. It's my main 'go-to' for a quick glance at inside-outside conditions, with the two easy to see displays located in different rooms. Very similar to yours [minus wind/baro], they're quite readable from a distance, and accurate.
If your WX station has a PC connection, you might see if it will let you upload your data to some of the other WX services, like CWOP, besides the problematic WU.
If its' current software package doesn't do that, try downloading the old "HeavyWeather" and "WUHU" progs/apps [formerly used by La Crosse, mine just keep humming along], and see if they will work with your station. I have copies of them, stored away somewhere. This might require some experimentation with the options and settings, but if they were to work, WUHU uploads to a number of online WX ingests [esp. the CWOP, which feeds MADIS].