I love WaterloggedDrinkMoreWater. I have a few minor quibbles, but I've used it religiously for months, and filling that daily bottle had definite it helped make me drink more water.
But when I first paid for premium a couple years ago, I know I created an account. When I try logging into the account on my iPad,I get an error message saying it does not recognize my email and password. However if I signed out and logged back in on my iPhone, it worked.
I've written emails to the developers a few times, and they have never responded. And now, my phone had to be sent away for repair, I am currently using a loaner iPhone, and I can't login on this iPhone either. While my regular phone is away, I can't log/save my data on either my iPad not temporary iPhone, and I also still can't get a response from the people responsible for WaterloggedDrinkMoreWater . I may have to abandon it and simply cut my losses, which is very frustrating for an app than I have paid even a penny for.