Hi, hoping someone can help.

I bought a DB Power brand IP camera (wireless) few years back. It came with a CD for installation/setup. I had to download a free software that allows me to connect the camera via my wifi router to that free software hosted by someone to my iphone using an app called AP camera. It was working initially and recently I cannot connect to the camera via that app. I suspected the free software must have decommissioned.

Is there any way I can re-establish the connection without another download of a software hosted by third party? Is there another option? Please kindly help for those who are expert in IP camera setup. Thanks!