Requirement to update a listing

hi! the code has update dates, for example, within 14 days the client must update his listing

Hi,

There’s no such feature at the moment, but you can set an expiration period for listings, and they will be expired every 14 days, so users will have to add them again (updated ones).

Yes, I already have 14 days of ad validity. but i want the client not to update listing
but only update the time

Sorry, there’s no simple snippet to do that. Please consider hiring someone on Fiverr to help you with your website customization.