So I bought a curado last year in January. So guess a year and a half. The older ones. Bought on sale at dicks. Outside of in yard, today was first fishing. 3rd cast the side plate comes off to me clicking spoil release. I fix, now every cast I make the side plate comes off.. Idk why or how. Anyone heard of this, I don't know much in mechanics of inside. So scared to take apart. 

Take it back to Dick's for repair or replacement. There may be nothing wrong with the reel and they will show you what you are doing wrong.

I called. No receipt or box. They said they can't do anything. I figured y'all would know.

If that is a green colored one it is most likely a G model.  Look at this picture. If it looks like this than put the side plate on and flip up the little handle where it says "Shimano. Turn until it stops and that should lock the side plate on. The side plate is removable in order to adjust the breaking system.  

If it is a G or E they have a side plate with a latch to prevent the side plate from falling off. To disengage the side plate or lock it back in place is kind of like putting a key into a cars ignition. So it sounds like the side plate is off and hanging lose by the hinge. You just need to line the side plate up with the frame and turn it to lock it in place.

Unless a part is broken somewhere in the frame or side plate which is not allowing to fasten down, it should be easy to put back together. There are videos on YouTube that may help.

It is G,. my other curados stay locked, I am assuming it is broke.  If it is broke, is it fixable going on the information I gave. Sorry to sound clueless, I've just never seen this from any reel.

You will need to send it to a reel repair center.. Check with your nearest tackle shop to find one that you will not have to mail of too. Often they have a local guy.

If you are unable to lock the side plate by turning the pop up tab in the locking direction, I'm going to assume the inner locking mechanism on the side plate is broke. If you take the side plate off, you can see the part of the lock that is either missing or broke. Find it on your schematic and order the part. It's a pretty simple disassembly and install if you take your time. I've taken a couple off to clean sand out of them. You'll be fine. Just go slow. 

Thanks guys. I will inspect it when I get home