Yes. Mine won't either. It is bending the hell out of it though.
I'm sure you will be fine. I have a bug deflector on the front of the car that is basically held down with 3m tape and nothing has ever happened.
I'm sure you'll still be able to get a wash. It's just a matter of possibly damaging your antennae if it's not that sturdy and their equipment is rough. You can always just go and ask directly with the staff so they can see it and have a better answer for you. Hope this helps!
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