App is blank

Hi, here is my app

is totally blank after the email is insert.

please help!

even if i make it public without email…happen the same, in blank

Do you have any conditions on your tabs? Is it possible that you have a condition that is not met so everything is hidden?

no conditions…actually, it was working without problem and suddenly this happen

Do you have any filters, sorts etc? Maybe also check for row owners?