Assistance needed want to auto populate feilds for date etc but not just when viewed in adobe?

Hello,

Can anybody help me please, I am very new to using Adobe Acrobat,

I auto populate feilds for date etc but not just when viewed in adobe? or even have a drop down menu of dates. When I view in adobe etc it is there but when the form is uploaded elsewhere although fillable these options are not present.

I have read this from the community - but not quite what I need - https://community.adobe.com/t5/acrobat-sdk-discussions/how-do-i-populate-a-form-with-current-date/td-p/8263996

Hope this makes sense any help will be greatly appreciated. Thanks.