Hey admin,
There is an issue as one of my closest friend Mahak Sinha aka Vartika is unable to access her account as it's continuously showing that user name doesn't exist. She tried by changing password but still that issue. She last accessed her account 9 months ago but now with new IF everything has changed.
Please do help her as she is very important member and she is really disappointed with new IF now. Give her one chance to change her username if that is an issue. She also emailed IF support team with her official mail account.
Link to her profile:-