Does NOT work on my shower

I want to return this because it does NOT work in my shower. This thing falls off within minutes once you put the shower head on it. My shower has tile which looks almost like floor tiles. I got these because where the current shower head is it's super tall but these were useless for me because it never stuck. I tried pretty much everything to get these to stick. Some people maybe it worked for them but not for me :-(

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