FilterRowTop Filtering is not working on Xamgrid for TextColumn?

I have a Textcolumn displaying Date and Time(Whose datetype is DateTimeOffset) in XAMGrid. I am unable to filter that column. I am binding the xamgrid through MVVM pattern.

I am using FilterRowTop Filtering in XAMGrid.

I tried changing DateTimeOffset to datetime,then applying ValueConverter, it still doesnt work. Is there any way to convert dateTime to string on UI or any other approach

HeaderText="Start Date"
HorizontalContentAlignment="Center" IsFixable="False"
IsSummable="False" IsFilterable="True" >