BTA - why am i have so much trouble?

BTA/RBTA won't move to the best location on their own sometimes, it i mostl a sign of stress. I don't think thereis anything yo can doin this case other than try wait it out a bit till it stop moving again and just rotate the LR. Thatis wat I do to resurrect my BTA when it does the same thing. However, plz don't try to move the anemoe tself as it ill just makes it start movig again. At least look at the bright side your anemone is at the edge of the tank. There has been few times my anemone hide under the base rock where I have no way to move it out unless Ibrek the rock.

EDIT: And When I say stress, it doesn't mean your water got problem or light got problem, it is just "different" from their old tank and it is enought to stress it