What happened to the pool calculator??? I bookmarked it and used it last year (2018). Now when I go to it, I'm asked to log in and when I do I'm told that I may have been deleted. The website I have bookmarked is Home - Pool Calculator. I don't know if this is associated with Trouble Free Pool but I have been using it for years via TFP. I am reluctant to register on this site unless it is connected to TFP.