I have an issue with the date format in Sitecore Forms on Sitecore 9.1. The field is only accepting mm/dd/yyyy format and I am unable to find the place where this can be changed. I even tried to change the Region and language options but this did not help. Although this might not be the correct solution for us anyway.
The format should be dd/mm/yyyy. If I try to submit the form with the date value let's say 27.06.2019, then I get an error message with "The value '27.06.2019' is not valid for Value". If the page refreshes, when the IsAjax is turned off, then even the value of the field changes to mm/dd/yyyy.