No Automatic runs possible, it has to be done manually.

Mandatory fields are necessary for a report to give the desired output. Looking at your query, if you want the control(setting) to change the field behavior, it's not possible. This is the reason why specific financial data sources won't preview data...

Kindly refer to KBA 1528450 and see if this helps you.

You mean to say, multiple cut off dates like a range/more than 1 entry is required? Also are you referring to AP/AR open items report?

Kindly refer to the localization toolkit which is available in the Jam page and below is the link.Localization Toolkit (sapjam.com)You may require an access to this.