Ive lost 3 years worth of data

Went to go add some information tonight about one of my twins and I cant get into my app! This is outrageous. Ive tracked everything on here for 3 years and now I cant get into any of it. Sooooo frustrated with this update. I used to recommend this app to everyone and now Im kind of hating it.

scarfgirl01 about Total Baby Pro, v4.5.0