Try to pop out the all " "(space) in the email field when register or login, because many IMEs' (Input Method Editor) add in a " "(speace) at the back of their email by automatic recommended when they entered and foodomaa system will see it as an "invalid email".
THIS IS NOT A GOOD USER EXPERIENCE AND NOT EASY TO NOTICE, UNLESS YOU ARE A GEEK OR PROGRAMMER. @Saurabh