I'm not the person to help but maybe a couple things which I assume you have done. Destiny 1 came out a few years ago and was around for a number of years. There will be a -blam!- ton of updates and patches, I assume you have downloaded and updated all these? You also need ps plus to play the game, I assume you have ps plus? I can't think of anything else ATM hopefully someone will be able to help you.