Hey man,
Double check your spring arm settings in the Components Tab, these should be turned on:
With the “Do Collision Test” option enabled it should work properly, but if not try increasing the Spring Arm length by 100 or so and see if that helps.
and make sure the camera is set up like this (EDIT: I had the arrow pointing to the wrong setting, this is the one that needs to be off):
Aside from that it should work properly, but post a screenshot of the issue so we can see what’s going on if that doesn’t fix it for you. 