@Mrseem26
The gifts won't show up at the mall unless it's a special occasion. (Christmas, White Day, Birthday.) And you must play in Real Time Mode to be able to buy gifts. (You must play the game before that event in Real Time Mode and then you must choose to go to the Mall.) You must also play the game during the event to give her the present.
You can check the Item command to confirm whether you already got a present for her.
https://sites.google.com/site/loveplusguide/game-play/second-part/commands
https://sites.google.com/site/loveplusguide/game-play/second-part/commands/item
Note: The presents are specific to each event. Ex. If you buy something for Christmas but you don't give it to her. After Christmas has passed, you won't be able to give that gift to her anymore.
I didn't get any reports with problems about presents before, so I assume that it's not technical problem. But if you're sure that it's the patch error, please tell me more details.