Need some help with PS2

Hello I just recently got a copy of Swap Magic Coder 3.8 for my birthday Thursday. I installed the flip top, the DVD disc won’t load but the CD disc does just fine. I got this because I ordered KH2FM and it should be here soon. I know there is a way to play it with the CD disk at least until I hear back from the people I bought it from. The only problem is that what I read was that I am supposed to open the CD tray and mine won’t open now. Has anyone had this problem? It seems to be on there alright so I’m not sure why it isn’t opening. Any suggestions? Thanks for the time guys!