Had exactly the same problem, Goldie, with a similar cup holder. Manufacturer stated it was specifically made to fit my 2017 F3L, but when in place (attached to multi-function switch housing), it blocked 60% of my left mirror. I fixed the problem by buying a piece of flat aluminum bar about 1/2" wide, 1/16" thick and about 6" long. Drilled 3 holes in it, bolted the supplied bracket to it and then mounted the extension bar (on the multi switch housing), where the supplied bracket was originally meant to go. This resulted in moving the cup holder about 3" more to the middle, and gave me back a clear and unobstructed view of the rear view mirror again. Cheap fix and I was still able to use the cup holder I had bought, and not waste my money. (You can use the two mounting bolts supplied with original cup holder bracket, but you'll need a small/short 3rd one with a washer & nut at inner end. Took better pics this morning, in daylight.)
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