I bought the DMG, PHB, and the MM but I cant seem to acces any subclasses, monsters, and other things i was promised. I realy need help here because it looks like i wasted over $90!

After purchase you still have to download. The purchase unlocks and enables download ability. 

yeah but what abot the other stuff like the subclasses. also i cant seem to find where i can download these books.

Quote from aidanjamez >>

I bought the DMG, PHB, and the MM but I cant seem to acces any subclasses, monsters, and other things i was promised. I realy need help here because it looks like i wasted over $90!

 Hello there aidanjamez,

What exactly are you trying to do?

If you want to read/browse the books, you can either do it via the website (go to the “Sources” tab at the top of the page, and click on the title you have purchased), or you can download the D&D Beyond app for your mobile device (not the D&D Beyond Player Tools app). You will have to sign into it using the same ID you used to create your account here, and then can download the books by clicking on “My account” at the bottom of the page, and the “My content” option. You will be presented with a list of titles, and can download the ones you have purchased, as well as the free Basic Rules and Elemental Evil Player’s Companion.

hey I got it to work by "syncing" it. thanks for the help guys you set me on the trail towards that button!